Fix Outlook Has Stopped Working Error Fast – Complete Guide

IT administrators who manage multiple Outlook profiles or Exchange/Office 365 environments often encounter the “Microsoft Outlook has stopped working” error. This issue usually occurs when Outlook crashes or stops responding due to problems such as corrupted PST files, faulty add-ins, damaged profiles, or outdated program files. If not resolved, users may experience frequent crashes, inability to access emails, and complete Outlook failure. This blog explores some of the manual troubleshooting methods and explains how to use the Aryson Outlook PST Repair Tool for a secure and reliable recovery. Download Now   Purchase Now

What Does “Outlook Has Stopped Working” Mean?

MS Outlook displays the “MS Outlook has stopped working” error generally when it crashes or does not respond, causing the application to close unexpectedly. Users may encounter this issue if Outlook cannot load its data files, add-ins, or profile settings properly. As a result, IT administrators might experience sudden shutdowns, freezing screens, or failure to start Outlook. To better understand this error, let us discuss some of the causes of this error, so you can resolve it effectively.

Top Causes of Outlook Crashes and Freezing Issues

Listed below are some of the root causes of the “Outlook not responding” error.

1. A corrupted PST file can cause Outlook crashes & prevent emails from opening.
2. A damaged Outlook profile might trigger Outlook to crash.
3. Faulty add-ins can prevent MS Outlook from responding.
4. An outdated version of Outlook may lead to performance issues.
5. Damaged or incomplete Microsoft Office installation files can cause this error.
6. Also, the large or oversized mailbox data files can slow down MS Outlook.

Review these causes to identify why Outlook is not responding. Then, refer to the recovery methods below and choose the suitable solution based on the cause.

Manual Methods to Fix “Outlook Has Stopped Working” Error

Some of the manual fixes that can help resolve Outlook crashes are as follows.

• Create a New Outlook Profile
• Repair a Corrupted PST File
• Optimise Microsoft Office
• Use Advanced Software

Try these methods according to the problem’s cause. If manual troubleshooting does not work, the automated solution described below can help.

Fix 1: Create a New Outlook Profile to Fix Crashes

A corrupted Outlook profile may cause the “Microsoft Outlook has stopped working” error. You can create a new Outlook profile to resolve the issues caused by corrupted settings or configuration errors.

Steps to Create a New Outlook Profile 

1. First, close the Microsoft Outlook application completely.
2. Open the Control Panel & search for Mail.
3. Next, click on the Mail option & select the Show Profiles option
4. Click Add and then provide a name for the new profile.
5. Click OK, enter your email account details, and follow the setup instructions.
6. Select Prompt for a profile to be used.
7. Set the new profile as the default profile.
8. Now, open Microsoft Outlook & choose the new profile.
9. If the new profile works correctly, you can delete the old profile later.

Why does this Methods Works?

Fix 2: Optimize Office 365 to Fix Outlook Issues

Office installation filescan cause the “Microsoft Office Outlook has stopped working” error. Optimizing Office repairs damaged files and restores Outlook functionality.

Steps to Optimize Microsoft Office 

1. To begin, close all the Microsoft Office applications on your system.
2. After that, open the Control Panel and go to Programs and Features.
3. Browse and select the Microsoft Office option in the program list.
4. Then, right-click on this option & select the Change option.
5. Now, choose between Quick Repair or Online Repair.
6. Simply follow the on-screen instructions to complete the process.

Repairing Office replaces damaged files and restores Outlook functionality.

Fix 3: Repair Corrupted PST File in Outlook

If the above methods do not work, the issue may be in your Outlook Data (PST files). Once you repair these corrupted PST files, the Outlook crashes will disappear, and it will work without any issues. The Inbox Repair Tool is Microsoft’s official utility for detecting and repairing PST file errors. Now, follow the steps below to repair the corrupted PST data.

Steps to Repair Corrupted Outlook Data Files

1. Close the MS Outlook application completely.
2. After that, go to the Office installation folder (such as Office16, Office15, or Office14).
3. Locate and open SCANPST.EXE (Inbox Repair Tool).
4. Click Browse & select the Outlook PST file.
5. Click Start to scan for corruption.
6. In case any error appears on the screen, you have to click on Repair.
7. At last, restart Outlook once the repair process completes.

Remember:

• Always back up your PST files before repairing them.
• You may need to perform these steps multiple times.
• Users might not be able to recover the highly corrupted PST files.

Important Note: Although ScanPST (Inbox Repair Tool) can fix minor corruption, it may not recover severely damaged PST files. If you want to recover highly corrupted PST files, you can try the Aryson Outlook PST Repair Tool, which easily repairs and restores the PST file. Once you repair the corrupted Outlook data file, the “Microsoft Outlook has stopped working” message might disappear. To get more insights into the software, refer to the upcoming section.

Automated Solution to Resolve Microsoft Outlook Crashes

Aryson Outlook PST Repair software is the most recommended solution used to repair corrupted or inaccessible Outlook PST files. It supports encrypted files, oversized PST recovery, and restores emails, contacts, calendars, and other mailbox items. Moreover, it offers multiple recovery modes, such as Standard mode, Advanced mode, and Deep Mode for different levels of corruption. Additionally, it provides the user with preview options and works without Outlook installation. Also, this software is compatible with various Windows & Outlook versions. You can use the same utility to fix common PST import issues in Microsoft 365. Now, perform the steps below carefully to avoid any kind of data loss during the recovery.

Quick Way to Repair Corrupted PST Files

1. Download and install the Aryson Outlook PST Repair Tool.
2. Click Open & select the corrupt PST file from your system.
3. Then, select one among the Standard, Advanced & Deep modes of recovery.
4. After that, select 32-bit or 64-bit versions, and click OK to start.
5. Select items of the PST file and preview them with their properties.
6. Click on the Save button to save your data in a different format.
7. Select ‘Save as PST’ and apply a date filter if needed.
8. Save the recovered PST file at a specified location on your system.

If you have followed the above steps carefully, and the Outlook suddenly stopped working due to the inaccessible PST file only, the issue might have been resolved.

Wrapping Up

In this blog, we came across some of the potential reasons why IT administrators face the “Microsoft Outlook has stopped working” error in MS Outlook. Along with that, we also discussed its possible manual fixes and the use of automated software to simplify the recovery process. For each cause of the error, there exists a different fix. So make sure you check the root cause of the Outlook crash and then perform the suitable fix accordingly. If you are a complete beginner and the issue resides in your corrupted PST file, opt for the above automated software for a secure Outlook recovery.

Frequently Asked Questions

About The Author:

Rohan Wiese

Rohan Wiese is a Technical Content Writer at Aryson Technologies, specializing in databases, e-mail recovery, and e-mail migration solutions. He enjoys conducting research and generating information that assists database administrators, businesses, and novices in resolving issues with MS SQL Server, MySQL databases, Cloud Computing, and Microsoft Exchange.

Realted Post

How to Import Large PST Files (50GB+) to Microsoft (Office) 365

Fix PST Validation Error in Office 365 – [2026 Guides]

How to Fix a Corrupted or Damaged PST File in Outlook [2026 Guide]