{"id":5580,"date":"2026-09-14T07:51:51","date_gmt":"2026-09-14T07:51:51","guid":{"rendered":"https:\/\/www.arysontechnologies.com\/blog\/?p=5580"},"modified":"2026-09-14T07:58:53","modified_gmt":"2026-09-14T07:58:53","slug":"outlook-is-running-slow","status":"publish","type":"post","link":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/","title":{"rendered":"Speed Up Slow Microsoft Outlook Application: Fix Lag, Freezing &#038; Performance Issues"},"content":{"rendered":"<div class=\"query\" style=\"background-color: #f7fff9; padding: 20px; \/* border-left: 3px solid #265378; *\/margin-bottom: 10px; border: 2px solid #00e477; border-radius: 19px;\">\r\n<p><em><b>Michael Ferris, IT Support Lead, Manchester, England\u00a0<\/b><\/em><\/p>\r\n<p><em>For the last few days, my Microsoft Outlook has been running very slowly. Opening emails takes longer to open. Even searching inside the inbox lags, and switching between folders has become difficult. I didn\u2019t make any extra changes to my setup. I am not sure about the reason for this. Therefore, how can I speed up slow Microsoft Outlook application and improve its performance?<\/em><\/p>\r\n<\/div>\r\n<div class=\"query\" style=\"background-color: #effaff; padding: 20px; border-left: 4px solid #265378; margin-bottom: 10px; border-radius: 20px; border-right: 4px solid #265378; box-shadow: rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, rgba(60, 64, 67, 0.15) 0px 2px 6px 2px; \/* border-image: linear-gradient(to bottom, #62D593, rgba(0, 0, 0, 0)) 1 100%;\">\r\n<p><em><strong><strong>Introduction: <span style=\"font-weight: 400;\">When your Outlook suddenly starts lagging, freezing, or taking a long time to open, that occurrence is considered as \u201cslow Outlook. This issue occurs frequently in Outlook. It could be because of many reasons, such as too many emails, network issues, etc. There are several ways to speed up Outlook, such as removing unused add-ons and clearing out old emails. However, if these basic troubleshooting methods do not resolve the issue. <\/span><span style=\"font-weight: 400;\">Then it&#8217;s recommended to use the<\/span> <a href=\"https:\/\/www.arysontechnologies.com\/outlook-pst-repair.html\"><b>Aryson Outlook PST Repair Software<\/b><\/a> <span style=\"font-weight: 400;\">to check for and repair PST-related issues that may be affecting Outlook\u2019s performance. <\/span><\/strong><\/strong><\/em><\/p>\r\n<p><span class=\"block_btn\"><a class=\"custom-download-btn\" href=\"https:\/\/www.arysontechnologies.com\/demo-version\/aryson-outlook-recovery.exe\"> Download Now<\/a>\u00a0\u00a0<a class=\"custom-buy-btn\" href=\"https:\/\/www.arysontechnologies.com\/outlook-recovery\/order-now.html\"> Purchase Now<\/a><\/span><\/p>\r\n<\/div>\r\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#Why_Is_My_Outlook_Running_Slow\" >Why Is My Outlook Running Slow?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#Quick_Inspections_Before_Troubleshooting\" >Quick Inspections Before Troubleshooting<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#How_to_Speed_Up_a_Slow_Microsoft_Outlook_Application\" >How to Speed Up a Slow Microsoft Outlook Application?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#1_Remove_Unwanted_Add-ins\" >1. Remove Unwanted Add-ins<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#2_Compact_the_PST_and_OST_Files\" >2. Compact the PST and OST Files<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#3_Clean_Up_or_Archive_the_Mailbox\" >3. Clean Up or Archive the Mailbox<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#4_Create_a_New_Outlook_Profile\" >4. Create a New Outlook Profile<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#5_Repair_the_Data_File_with_ScanPSTexe\" >5. Repair the Data File with ScanPST.exe<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#6_Using_the_Aryson_Outlook_PST_Repair_Tool\" >6. Using the Aryson Outlook PST Repair Tool<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#Key_features_of_the_Aryson_Outlook_PST_Repair_Tool\" >Key features of the Aryson Outlook PST Repair Tool<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#Step-by-step_guide_to_use_the_Aryson_Outlook_PST_Recovery_Tool\" >Step-by-step guide to use the Aryson Outlook PST Recovery Tool<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#Conclusion\" >Conclusion<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"Why_Is_My_Outlook_Running_Slow\"><\/span>Why Is My Outlook Running Slow?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Below are some more points that explain what other possible reasons could be.<\/p>\r\n<ul>\r\n<li aria-level=\"1\"><strong>An oversized PST or OST file<\/strong>: Outlook stores everything locally in one of these files, and once it grows large, reading through it becomes noticeably slower.<\/li>\r\n<li aria-level=\"1\"><strong>Too many add-ins<\/strong>: Each one uses memory and processing time at startup. In spite of being disabled, they run in the background and use memory.<\/li>\r\n<li aria-level=\"1\"><strong>An outdated version of Outlook or Windows<\/strong>: Updates that have not been installed can leave known performance problems unresolved.<\/li>\r\n<li aria-level=\"1\"><strong>Large amounts of emails: <\/strong>Files that are larger in size consist of many sub-folders, which Outlook loads every time that folder is opened.<\/li>\r\n<li aria-level=\"1\">\u00a0<strong>Low RAM and insufficient disk space: <\/strong>Outlook consumes more system resources for better performance, affecting running applications because of limited system resources.<\/li>\r\n<li aria-level=\"1\"><strong>File attachments: <\/strong>Bigger attachments that come with emails increase the file size, which makes Outlook laggy.<\/li>\r\n<\/ul>\r\n<h3 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"Quick_Inspections_Before_Troubleshooting\"><\/span>Quick Inspections Before Troubleshooting<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Before moving further, a quick check is worth it to understand why \u201cOutlook running slowly\u201d:<\/p>\r\n<ul>\r\n<li aria-level=\"1\"><strong>Check your internet connection for stability,<\/strong> as a poor connection might slow down Outlook, and it might feel laggy.<\/li>\r\n<li aria-level=\"1\"><strong>Clear the cache<\/strong> because it can cause temporary glitches, and Outlook becomes slow. Therefore, clear the cache before restarting Outlook.<\/li>\r\n<li aria-level=\"1\"><strong>Update Windows and Outlook<\/strong> because Microsoft regularly patches to reduce the occurrence of these issues.<\/li>\r\n<\/ul>\r\n<h2 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"How_to_Speed_Up_a_Slow_Microsoft_Outlook_Application\"><\/span>How to Speed Up a Slow Microsoft Outlook Application?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>If your Outlook is still slow or unresponsive after going through the above section. Below are some points to speed up slow Microsoft Outlook application.<\/p>\r\n<h3 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"1_Remove_Unwanted_Add-ins\"><\/span>1. Remove Unwanted Add-ins<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Add-ins are mini programs that are connected to Microsoft Office to extend the functionality of the software. Many add-ins instantly load as soon as the program starts. If any add-in is not currently used, they are still active in the background. That&#8217;s why remove or disable unused add-ins. This is the fastest and easiest way to fix Outlook lag issues.<\/p>\r\n<p>To disable add-ins, follow the steps below.<\/p>\r\n<ol>\r\n<li aria-level=\"1\"><strong>Open Microsoft Outlook<\/strong>, then click <strong>File<\/strong> \u2192 <strong>Options<\/strong> from the left-side menu.<\/li>\r\n<li aria-level=\"1\">In the <strong>Options<\/strong> window, click <strong>Add-ins<\/strong> on the left panel.<\/li>\r\n<li aria-level=\"1\">At the <strong>bottom<\/strong>, click the <strong>Manage <\/strong>drop-down.<\/li>\r\n<li aria-level=\"1\">Now, select <strong>Add-ins<\/strong>, and click <strong>Go<\/strong>.<\/li>\r\n<li aria-level=\"1\">A<strong> pop-up<\/strong> will appear containing add-ins\u2014<strong>uncheck<\/strong> those you don&#8217;t actively use.<\/li>\r\n<li aria-level=\"1\">Click <strong>OK <\/strong>to save the changes, then <strong>exit Outlook<\/strong>.<\/li>\r\n<li aria-level=\"1\"><strong>Reopen Outlook <\/strong>to check if Outlook is working fine.<\/li>\r\n<\/ol>\r\n<h3 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"2_Compact_the_PST_and_OST_Files\"><\/span>2. Compact the PST and OST Files<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Deleting emails does not shrink the data file itself. The empty space stays there until the file is compacted. Therefore, to speed up slow Microsoft Outlook application:<\/p>\r\n<ol>\r\n<li aria-level=\"1\"><strong>Open Outlook<\/strong> again and navigate to <strong>File<\/strong> \u2192 <strong>Account Settings<\/strong>.<\/li>\r\n<li aria-level=\"1\">And select <strong>Account Settings<\/strong> again from the <strong>drop-down<\/strong> menu.<\/li>\r\n<li aria-level=\"1\">After that, click <strong>Data Files<\/strong> to see a list of all PST and OST files<\/li>\r\n<li aria-level=\"1\"><strong>Click <\/strong>on the<strong> PST file<\/strong> you want to compact.<\/li>\r\n<li aria-level=\"1\">Click <strong>Settings<\/strong>, then click <strong>Compact Now<\/strong>.<\/li>\r\n<\/ol>\r\n<div style=\"margin: 20px 0;\">\r\n<table style=\"border-collapse: collapse; border: 1px solid #555555;\">\r\n<tbody>\r\n<tr>\r\n<td><em>\u00a0This process can take time depending on the file size.\u00a0<\/em><\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<h3 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"3_Clean_Up_or_Archive_the_Mailbox\"><\/span>3. Clean Up or Archive the Mailbox<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Sometimes you might feel that your Microsoft Outlook has started running very slowly. This could be because of your mailbox. A mailbox that has grown large in size causes a load on Outlook every time it opens. You can reduce the file size by these below given steps.<\/p>\r\n<ol>\r\n<li aria-level=\"1\"><strong>Open Outlook <\/strong>again, navigate to the <strong>File<\/strong> tab \u2192 <strong>Tools,<\/strong> and select <strong>Mailbox Cleanup<\/strong>.<\/li>\r\n<li aria-level=\"1\">Now, click <strong>View Mailbox Size<\/strong> to see folder size.<\/li>\r\n<li aria-level=\"1\">You can use the <strong>Find items older than<\/strong> option to locate old emails.<\/li>\r\n<li aria-level=\"1\">Click <strong>Empty<\/strong> <strong>Deleted Items<\/strong> to permanently delete them.<\/li>\r\n<li aria-level=\"1\">Use <strong>AutoArchive<\/strong> (or <strong>File \u2192 Tools \u2192 Clean Up Old Items<\/strong>) to move them into a separate archive folder.<\/li>\r\n<\/ol>\r\n<h3 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"4_Create_a_New_Outlook_Profile\"><\/span>4. Create a New Outlook Profile<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>If none of that works, the profile might be the main issue.<\/p>\r\n<ol>\r\n<li aria-level=\"1\">Exit <strong>Outlook <\/strong>before making any changes to profiles.<\/li>\r\n<li aria-level=\"1\">Open the <strong>Control Panel,<\/strong> then search for and click <strong>Mail (Microsoft Outlook)<\/strong>.<\/li>\r\n<li aria-level=\"1\">In the Mail Setup, click <strong>Show Profiles<\/strong>, then click <strong>Add<\/strong> to create a new profile.<\/li>\r\n<li aria-level=\"1\">Follow the wizard to <strong>set up your email account<\/strong> under this new profile.<\/li>\r\n<li aria-level=\"1\">Then, select the <strong>new profile<\/strong>, choose <strong>Always use this profile, <\/strong>and set it as the default.<\/li>\r\n<li aria-level=\"1\">Then click <strong>OK<\/strong> and reopen Outlook.<\/li>\r\n<\/ol>\r\n<p>A corrupted profile can drag down performance that is hard to trace back. This could help you to troubleshoot performance issues in Outlook.<\/p>\r\n<h3 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"5_Repair_the_Data_File_with_ScanPSTexe\"><\/span>5. Repair the Data File with ScanPST.exe<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Sometimes the file size is not an issue. It is because of corruption inside the PST or OST file. To repair corrupted PST file issues and speed up slow Microsoft Outlook application, follow these steps.<\/p>\r\n<ol>\r\n<li aria-level=\"1\"><strong>Close Outlook <\/strong>completely.<\/li>\r\n<li aria-level=\"1\">Locate <strong>ScanPST.exe<\/strong> inside your installation folder.<\/li>\r\n<li aria-level=\"1\">Open ScanPST.exe, then click <strong>Browse<\/strong>.<\/li>\r\n<li aria-level=\"1\">Select the PST or OST file you want to check.<\/li>\r\n<li aria-level=\"1\">Click <strong>Start<\/strong> to begin the scan.<\/li>\r\n<li aria-level=\"1\">If errors are found, click <strong>Repair<\/strong> to fix them.<\/li>\r\n<\/ol>\r\n<p>The <a href=\"https:\/\/support.microsoft.com\/en-gb\/outlook\/repair-outlook-data-files-pst-and-ost\" target=\"_blank\" rel=\"noopener\">Outlook Inbox Repair Tool <\/a>can handle minor corruption easily. It struggles once the damage increases.<\/p>\r\n<h3 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"6_Using_the_Aryson_Outlook_PST_Repair_Tool\"><\/span>6. Using the Aryson Outlook PST Repair Tool<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>There are certain cases where the<strong> Inbox Repair Tool of Outlook<\/strong> could fail to solve the problem. In these situations, use the <strong>Aryson Outlook PST Repair Tool<\/strong> to fix your PST file. It doesn\u2019t rely on Outlook to repair your PST file. It can easily repair corrupt and inaccessible files. You also get a load &amp; save option to save a snapshot to avoid re-scanning the PST file.<\/p>\r\n<h4 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"Key_features_of_the_Aryson_Outlook_PST_Repair_Tool\"><\/span>Key features of the Aryson Outlook PST Repair Tool<span class=\"ez-toc-section-end\"><\/span><\/h4>\r\n<p>Here are some of the key features, which are listed as follows:<\/p>\r\n<ol>\r\n<li aria-level=\"1\"><strong>Fixes corrupt\/inaccessible PST files<\/strong>\u2014retains the recovered emails, contacts, calendar, tasks, notes, and journal exactly.<\/li>\r\n<li aria-level=\"1\"><strong>Handles encrypted &amp; password-protected PST files\u2014<\/strong>works with PST files with high encryption, low encryption, and no encryption. Also handles alignment errors and high compaction.<\/li>\r\n<li aria-level=\"1\"><strong>Three PST repair modes\u2014<\/strong>Standard (minor corruption), Advanced (moderate corruption), and Deep (severe corruption).<\/li>\r\n<li aria-level=\"1\"><strong>Doesn&#8217;t depend on ScanPST.exe or Outlook\u2014<\/strong>functionality assured even if the MS Inbox Repair Tool fails.<\/li>\r\n<li aria-level=\"1\"><strong>Fixed oversized PST files\u2014<\/strong>No PST file size limitation for corrupted PSTs.<\/li>\r\n<li aria-level=\"1\"><strong>Multiple saving options<\/strong>\u2014export recovered PST emails, etc., as PST, EML, MSG, DBX, or MBOX.<\/li>\r\n<\/ol>\r\n<h4 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"Step-by-step_guide_to_use_the_Aryson_Outlook_PST_Recovery_Tool\"><\/span>Step-by-step guide to use the Aryson Outlook PST Recovery Tool<span class=\"ez-toc-section-end\"><\/span><\/h4>\r\n<p><span style=\"font-weight: 400;\">Below are some points to recover and restore corrupted files.<\/span><\/p>\r\n<ol>\r\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Download and install the <\/span><b>Aryson Outlook PST Repair Tool<\/b><span style=\"font-weight: 400;\"> &amp; open it with admin rights.<\/span><\/li>\r\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Click on &#8216;<\/span><b>Open<\/b><span style=\"font-weight: 400;\">&#8216; to load your corrupted PST file and choose the required recovery mode.<\/span><\/li>\r\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Choose the <\/span><b>32-bit or 64-bit version<\/b><span style=\"font-weight: 400;\">&gt;&gt; then click &#8216;<\/span><b>OK<\/b><span style=\"font-weight: 400;\">&#8216; to start the scan process.<\/span><\/li>\r\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">After scanning, select the required folders\/maiboxes to recover.<\/span><\/li>\r\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Click <\/span><b>Save <\/b><span style=\"font-weight: 400;\">&gt;&gt; choose <\/span><b>the required output format and apply filters.<\/b><\/li>\r\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Choose the <\/span><b>destination location &amp;<\/b><span style=\"font-weight: 400;\"> click <\/span><b>OK <\/b><span style=\"font-weight: 400;\">to save the recovered PST file.<\/span><\/li>\r\n<\/ol>\r\n<div style=\"border: 2px solid #4a6fa5; padding: 10px; margin-top: 10px; margin-bottom: 10px; border-radius: 25px; background-color: #f4f7fb; font-family: Arial, sans-serif; font-size: 16px; line-height: 1.5; text-align: left;\"><em><strong>Note<\/strong>: By following the above steps, you can speed up slow Microsoft Outlook application. More is offered by the software. Therefore, it\u2019s recommended to follow the <a href=\"https:\/\/www.arysontechnologies.com\/outlook-recovery\/how-it-works.html\" target=\"_blank\" rel=\"noopener\"><strong>detailed guide of the Aryson PST Recovery<\/strong><\/a> tool. This helps in understanding the features and working of the software before fixing the issue.<\/em><\/div>\r\n<h2 class=\"main_heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Outlook can slow down due to several common reasons. Some of the common reasons are add-ins, the size of the file, and insufficient space. Walking through some solutions, such as disabling add-ins, cleaning the mailbox, and compacting the file, works more smoothly. In most of the scenarios, the general problem is corruption that cannot be addressed by manual ways.<\/p>\r\n<h3 class=\"faq-main_heading\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n<div class=\"schema-faq wp-block-yoast-faq-block\">\r\n<div id=\"faq-question-1789371999301\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q1. Does repairing Outlook data files improve performance?<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>: Yes, whether that repair is done through ScanPST.exe or the Aryson Outlook PST Repair Tool. Fixing the corruption in the data file usually improves the performance of your Outlook application.<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1789372002504\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q2. Should I try manual fixes or a repair tool first?<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>: If you have lage amount of files, go for a repair tool; otherwise, follow the manual method. It\u2019s best to use the Aryson Outlook PST Repair Tool when Outlook\u2019s built-in inbox repair tools fail to remove the corruption from the file, and the corruption becomes unavoidable.<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1789372003169\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q3. Why is my Outlook slow when opening emails?<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans:<\/strong> There are several reasons for this, such as a large mailbox, too many add-ins, or a corrupted data file. If the user faces any such problems, it\u2019s recommended to remove those issues, and if none work, try going through this post to ensure the speed-up for Outlook.<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1789372003752\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q4. How do I make my Outlook start up fast?<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans:<\/strong> As discussed in the above section, you can speed up Outlook in several ways, some of which are<br \/>\u23e9Disable add-ins to reduce the startup load.<br \/>\u23e9Reduce mailbox sizes for PST files.<br \/>\u23e9Have a compacted file.<br \/>\u23e9Clean up old files to reduce size.<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1789372004279\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q5. Due to larger PST files, does Outlook freeze?<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans:<\/strong> Yes, a large PST file can freeze or make Outlook slow. Because Outlook cannot perform indexing properly, as a large PST file is too big to fit within its limit. Therefore, issues such as freezing and slowing become more common, especially when performing searches or switching folders.<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1789372004896\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q6.<\/strong> <strong>Why is Outlook so slow at the moment?<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. Outlook usually slows down due to a bloated PST\/OST file, too many add-ins running, or a larger mailbox. Poor network connectivity in cached mode, or background sync with a large resource, can lead to a slow Outlook application.\u00a0<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1789372005440\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q7.<\/strong> <strong>How to make my Outlook run faster?<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. You can follow these steps.<br \/>\u23e9Outlook add-ins: Disable\/uninstall add-ins for performance.<br \/>\u23e9Smaller cache for cached mailbox: In Account settings\/More Settings, reduce the range.\u00a0<br \/>\u23e9Compact your PST file.\u00a0<br \/>\u23e9Archive emails to a storage location.\u00a0<br \/>\u23e9Install the latest updates for both Windows and Outlook.<\/p>\r\n<\/div>\r\n<div id=\"faq-question-1789372155576\" class=\"schema-faq-section\"><strong class=\"schema-faq-question\"><strong>Q8<\/strong>. <strong>How do I clear my Outlook cache?\u00a0<\/strong><br \/><\/strong>\r\n<p class=\"schema-faq-answer\"><strong>Ans<\/strong>. You can clear the Outlook cache by closing Outlook and deleting temporary\u00a0 OST files. After that, once you open Outlook again, a new OST file will be generated on your system storage. In this way, you can ensure whether the issue has been completely fixed or not. Additionally, you should also check whether the installation of Outlook is corrupted or not by running Office repair.<\/p>\r\n<\/div>\r\n<\/div>\r\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;5580&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;3&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;Rate this post&quot;,&quot;legend&quot;:&quot;5\\\/5 - (3 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Speed Up Slow Microsoft Outlook Application: Fix Lag, Freezing \\u0026amp; Performance Issues&quot;,&quot;width&quot;:&quot;142.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 142.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            5\/5 - (3 votes)    <\/div>\n    <\/div>\n","protected":false},"excerpt":{"rendered":"<p>Michael Ferris, IT Support Lead, Manchester, England\u00a0 For the last few days, my Microsoft Outlook has been running very slowly.<a class=\"read-more ml-1 main-read-more\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/\">Read More<\/a><\/p>\n","protected":false},"author":12,"featured_media":7470,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[139],"tags":[],"class_list":["post-5580","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-outlook"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Speed Up Slow Microsoft Outlook Application: Fix Lag Issues<\/title>\n<meta name=\"description\" content=\"Speed up a slow Microsoft Outlook application. Fix lag, freezing, delays, and performance issues with effective tips to improve Outlook speed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Speed Up Slow Microsoft Outlook Application: Fix Lag Issues\" \/>\n<meta property=\"og:description\" content=\"Speed up a slow Microsoft Outlook application. Fix lag, freezing, delays, and performance issues with effective tips to improve Outlook speed.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/\" \/>\n<meta property=\"og:site_name\" content=\"Aryson Technologies Blog\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-14T07:51:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-09-14T07:58:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.arysontechnologies.com\/blog\/wp-content\/uploads\/2026\/09\/speed-up-slow-microsoft-outlook-application.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1344\" \/>\n\t<meta property=\"og:image:height\" content=\"768\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"Harshita Sachdeva\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Harshita Sachdeva\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"9 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/\"},\"author\":{\"name\":\"Harshita Sachdeva\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/#\\\/schema\\\/person\\\/13ee1c45c86e1a77e4dce0851538ad4f\"},\"headline\":\"Speed Up Slow Microsoft Outlook Application: Fix Lag, Freezing &#038; Performance Issues\",\"datePublished\":\"2026-09-14T07:51:51+00:00\",\"dateModified\":\"2026-09-14T07:58:53+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/\"},\"wordCount\":1846,\"publisher\":{\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/speed-up-slow-microsoft-outlook-application.webp\",\"articleSection\":[\"Outlook\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/\",\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/\",\"name\":\"Speed Up Slow Microsoft Outlook Application: Fix Lag Issues\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/09\\\/speed-up-slow-microsoft-outlook-application.webp\",\"datePublished\":\"2026-09-14T07:51:51+00:00\",\"dateModified\":\"2026-09-14T07:58:53+00:00\",\"description\":\"Speed up a slow Microsoft Outlook application. 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With a meticulous, reader-first approach, I break down complex technical processes into simple, actionable content - helping IT professionals and decision-makers tackle challenges efficiently.\",\"sameAs\":[\"https:\\\/\\\/in.linkedin.com\\\/in\\\/harshita-sachdeva-028156292\"],\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/author\\\/harshita\\\/\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789371999301\",\"position\":1,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789371999301\",\"name\":\"Q1. Does repairing Outlook data files improve performance?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans<\\\/strong>: Yes, whether that repair is done through ScanPST.exe or the Aryson Outlook PST Repair Tool. Fixing the corruption in the data file usually improves the performance of your Outlook application.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372002504\",\"position\":2,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372002504\",\"name\":\"Q2. Should I try manual fixes or a repair tool first?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans<\\\/strong>: If you have lage amount of files, go for a repair tool; otherwise, follow the manual method. It\u2019s best to use the Aryson Outlook PST Repair Tool when Outlook\u2019s built-in inbox repair tools fail to remove the corruption from the file, and the corruption becomes unavoidable.<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372003169\",\"position\":3,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372003169\",\"name\":\"Q3. Why is my Outlook slow when opening emails?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans:<\\\/strong> There are several reasons for this, such as a large mailbox, too many add-ins, or a corrupted data file. If the user faces any such problems, it\u2019s recommended to remove those issues, and if none work, try going through this post to ensure the speed-up for Outlook.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372003752\",\"position\":4,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372003752\",\"name\":\"Q4. How do I make my Outlook start up fast?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans:<\\\/strong> As discussed in the above section, you can speed up Outlook in several ways, some of which are<br>\u23e9Disable add-ins to reduce the startup load.<br>\u23e9Reduce mailbox sizes for PST files.<br>\u23e9Have a compacted file.<br>\u23e9Clean up old files to reduce size.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372004279\",\"position\":5,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372004279\",\"name\":\"Q5. Due to larger PST files, does Outlook freeze?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans:<\\\/strong> Yes, a large PST file can freeze or make Outlook slow. Because Outlook cannot perform indexing properly, as a large PST file is too big to fit within its limit. Therefore, issues such as freezing and slowing become more common, especially when performing searches or switching folders.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372004896\",\"position\":6,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372004896\",\"name\":\"Q6. Why is Outlook so slow at the moment?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans<\\\/strong>. Outlook usually slows down due to a bloated PST\\\/OST file, too many add-ins running, or a larger mailbox. Poor network connectivity in cached mode, or background sync with a large resource, can lead to a slow Outlook application.\u00a0<br>\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372005440\",\"position\":7,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372005440\",\"name\":\"Q7. How to make my Outlook run faster?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans<\\\/strong>. You can follow these steps.<br>\u23e9Outlook add-ins: Disable\\\/uninstall add-ins for performance.<br>\u23e9Smaller cache for cached mailbox: In Account settings\\\/More Settings, reduce the range.\u00a0<br>\u23e9Compact your PST file.\u00a0<br>\u23e9Archive emails to a storage location.\u00a0<br>\u23e9Install the latest updates for both Windows and Outlook.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372155576\",\"position\":8,\"url\":\"https:\\\/\\\/www.arysontechnologies.com\\\/blog\\\/outlook-is-running-slow\\\/#faq-question-1789372155576\",\"name\":\"Q8. How do I clear my Outlook cache?\u00a0\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<strong>Ans<\\\/strong>. You can clear the Outlook cache by closing Outlook and deleting temporary\u00a0 OST files. 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With a meticulous, reader-first approach, I break down complex technical processes into simple, actionable content - helping IT professionals and decision-makers tackle challenges efficiently.","sameAs":["https:\/\/in.linkedin.com\/in\/harshita-sachdeva-028156292"],"url":"https:\/\/www.arysontechnologies.com\/blog\/author\/harshita\/"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789371999301","position":1,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789371999301","name":"Q1. Does repairing Outlook data files improve performance?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans<\/strong>: Yes, whether that repair is done through ScanPST.exe or the Aryson Outlook PST Repair Tool. Fixing the corruption in the data file usually improves the performance of your Outlook application.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372002504","position":2,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372002504","name":"Q2. Should I try manual fixes or a repair tool first?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans<\/strong>: If you have lage amount of files, go for a repair tool; otherwise, follow the manual method. It\u2019s best to use the Aryson Outlook PST Repair Tool when Outlook\u2019s built-in inbox repair tools fail to remove the corruption from the file, and the corruption becomes unavoidable.<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372003169","position":3,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372003169","name":"Q3. Why is my Outlook slow when opening emails?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans:<\/strong> There are several reasons for this, such as a large mailbox, too many add-ins, or a corrupted data file. If the user faces any such problems, it\u2019s recommended to remove those issues, and if none work, try going through this post to ensure the speed-up for Outlook.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372003752","position":4,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372003752","name":"Q4. How do I make my Outlook start up fast?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans:<\/strong> As discussed in the above section, you can speed up Outlook in several ways, some of which are<br>\u23e9Disable add-ins to reduce the startup load.<br>\u23e9Reduce mailbox sizes for PST files.<br>\u23e9Have a compacted file.<br>\u23e9Clean up old files to reduce size.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372004279","position":5,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372004279","name":"Q5. Due to larger PST files, does Outlook freeze?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans:<\/strong> Yes, a large PST file can freeze or make Outlook slow. Because Outlook cannot perform indexing properly, as a large PST file is too big to fit within its limit. Therefore, issues such as freezing and slowing become more common, especially when performing searches or switching folders.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372004896","position":6,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372004896","name":"Q6. Why is Outlook so slow at the moment?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans<\/strong>. Outlook usually slows down due to a bloated PST\/OST file, too many add-ins running, or a larger mailbox. Poor network connectivity in cached mode, or background sync with a large resource, can lead to a slow Outlook application.\u00a0<br>","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372005440","position":7,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372005440","name":"Q7. How to make my Outlook run faster?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans<\/strong>. You can follow these steps.<br>\u23e9Outlook add-ins: Disable\/uninstall add-ins for performance.<br>\u23e9Smaller cache for cached mailbox: In Account settings\/More Settings, reduce the range.\u00a0<br>\u23e9Compact your PST file.\u00a0<br>\u23e9Archive emails to a storage location.\u00a0<br>\u23e9Install the latest updates for both Windows and Outlook.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372155576","position":8,"url":"https:\/\/www.arysontechnologies.com\/blog\/outlook-is-running-slow\/#faq-question-1789372155576","name":"Q8. How do I clear my Outlook cache?\u00a0","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"<strong>Ans<\/strong>. You can clear the Outlook cache by closing Outlook and deleting temporary\u00a0 OST files. After that, once you open Outlook again, a new OST file will be generated on your system storage. In this way, you can ensure whether the issue has been completely fixed or not. Additionally, you should also check whether the installation of Outlook is corrupted or not by running Office repair.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/posts\/5580","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/comments?post=5580"}],"version-history":[{"count":8,"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/posts\/5580\/revisions"}],"predecessor-version":[{"id":7469,"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/posts\/5580\/revisions\/7469"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/media\/7470"}],"wp:attachment":[{"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/media?parent=5580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/categories?post=5580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.arysontechnologies.com\/blog\/wp-json\/wp\/v2\/tags?post=5580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}