How to Fix Outlook 2011 Error Code 17199 – An Unknown Error Has Occurred

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  • Updated on December 14th, 2023

While using the Macintosh, configuring the Outlook in it is sometimes very annoying. The reason for saying so is that when you are about to send the important email to someone and the error Code 17199 pops up. The message that appears looks something like the following:

An unknown error has occurred in Outlook. A message in your Outlook could not be sent. The account which created the message could not be found.
Error code: – 17199

This leaves you disheartened and scared. You don’t want your system to crash. You become so desperate that you start to re-send the message again and again but nothing happens. This situation is bizarre. You want to get out of it ASAP.

Reasons for this Error

Outlook for the Mac book has a different configuration. It uses the OLM files to store the user Mailbox information and saves it in the storage drive. These OLM files at times are not accessible due to the violation of certain conditions. The reason for happening this differs. Sometimes this could happen due to the following reasons:-

  • Crashing of the Outlook abruptly in the Mac causes the failure to access the Mac OLM files.
  • Sometimes the virus attacks the network which enters the Mac system and corrupts the existing OLM files.
  • If there is any kind of intervention while installing Mac Outlook then there is a chance that it might corrupt the OLM file.
  • If the storage media is corrupted it creeps into the system. Even if it is a portable data that is stored.
  • If the server of the Microsoft Exchange crashes.
  • When the Outlook application is being shut down improperly or forcefully.
  • If you import the Mac OLM files to Outlook for Windows without changing the format.
  • Enhanced storage size issues

This OLM file the error code 17199 in the OLM files is a very stubborn error and it is really a tough task to fix it. Even if you re-install the MS office app you will not get rid of it.

Resolve the Error code 17199: “An unknown error has occurred in Outlook”

My resolution to fix the aforesaid glitch involves three steps, by following these steps you can fix error code: 171799:

  • Connect to the web: Take a test to check whether you can log in through the web-based app or not. For example, try to log in to your Google + account, if you login successfully then that’s great, else get in touch with the email provider to assign you a new username and password.
  • All the emails of the Outbox have to be sent to Trash. Open the outbox folder and delete all the pending emails. Now execute the Send /receive process. If the problem is still not fixed then hop on the next step.

Username and the password has to be re-typed: to successfully take this step, perform the following action step by step –

  1. Open Outlook Application on your PC.
  2. Click Accounts in the Tools menu option.
  3. Choose your email account, which will appear on the left pane of the window.
  4. Enter the Email Address which is error-free and its password.
  5. Make sure that the listed Outgoing Server and Incoming server are precise.
  6. The red button has to be clicked by using the cursor, in the upper left corner. This action will close the window.

Even by trying this manual method if the error still persists, then you should look for some other option to resolve this issue error code: 171799. You should try our too which is Aryson’s third-party OLM to PST Converter tool. It will repair and restore all the Mac OLM to Outlook PST file in just a few minutes.

Use Third-Party Application to Resolve the error code: 171799

  • Download and Launch OLM to PST Converter Software.
  • Select the OLM file in your system.
  • As soon as you choose the file, scanning will start.
  • Once the scanning is done, preview the items of OLM files with attachments.
  • Now select OLM file, and export or save them in the PST file format.
    OR
  • Select Recovered OLM file and save them into MBOX (apple mailbox)
    OR
  • Save or convert the OLM recovered file into EML
    OR
  • Save the recovered OLM files into MSG file format.

You have various options to save the OLM file. So you can save it in any format and access them easily in their respective email client.

Conclusion

Thus, we have precisely discussed all the steps to resolve the error 171799. We can fix this error manually as well as by consulting the third party. In this blog, I have discussed both. The manual method is very time taking and if you miss out on even a single step you are at the risk of looking your entire data. On the other hand, when you opt for the third party method, we take the responsibility to secure your mail and assure you that all your data restore safely.

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About The Author:

Rohan Wiese is a Technical Writer at Aryson Technologies. He is an expert Email Forensic, Cloud Computing, and a passionate nerd with over 10 years of experience in technical content writing. He writes about Cloud Migration, Database Recovery, Email Backup, Windows, Mac, and Tech.

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