MS Outlook Crashing: 8 Methods to Get Your Emails Working Again

MS Outlook can crash due to various reasons, including corrupted files, malware, and outdated software.

One of the simplest methods to fix the issue is to close and reopen MS Outlook. This often resolves the problem, especially if the crash was caused by a minor glitch.

If closing and reopening doesn't work, you can try restarting your computer. This can help resolve any underlying issues that may be causing the crash.

Another method is to check for updates and ensure that your MS Outlook is running on the latest version.

If Outlook crashes, try running it in Safe Mode to determine if an Add-in is causing the issue. This mode limits features and loads no add-ins.

Running Outlook in Safe Mode can be a game-changer if you're experiencing crashes. If Outlook doesn't crash in Safe Mode, it's likely that one or more Add-ins are to blame.

To run Outlook in Safe Mode, follow the instructions in the image below, which is referenced in the article. This simple step can help you identify the root cause of the problem.

If running in Safe Mode doesn't resolve the issue, you can try running Outlook Diagnostics. This tool performs diagnostic checks and returns potential solutions to resolve Outlook issues.

Running Outlook Diagnostics is a good option if you've tried everything else and Outlook is still crashing.

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Repairing Outlook can be a straightforward process if you know where to start. Run Outlook and click File, then click Account Settings and select your account, and finally click Repair.

Incorrect account settings can cause Outlook to crash, so verifying your account settings is crucial. Click Account Settings, and then click Account Settings in the drop-down menu, and select your account, then click Repair.

Repairing your Outlook account settings can resolve the issue. Click Next, then follow the on-screen instructions to repair your account, and reopen Outlook to check if it runs smoothly now.

Problems with Outlook or MS Office program files can also cause issues. In this case, you can try repairing or reinstalling Microsoft Office. Select the repair option and follow the wizard to repair the MS office.

Corrupted or damaged Outlook data files can cause the problem too. Rebuilding the Outlook data file can fix it. Click the File tab, and then follow the instructions to rebuild your data file.

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Here are the steps to repair your Outlook account settings:

If repairing your account settings doesn't work, you can try repairing or reinstalling Microsoft Office.

If your computer is running multiple programs in the background, it might cause Outlook to crash. Restarting your computer can resolve this issue.

Sometimes, a program running in the background can interfere with Outlook, causing it to crash. Restarting the system might fix the problem.

To prevent incorrect account settings from causing Outlook to crash, you need to verify that your account settings are correct. Run Outlook and click File.

Click Account Settings, and then click Account Settings in the drop-down menu. Select your account, then click Repair.

If the issue persists, try disabling the add-ins installed on your Outlook. Some add-ins can impact Outlook's performance and slow it down.

Here are the steps to disable add-ins:

Repairing or reinstalling Microsoft Office can also resolve the issue. Select the repair option and follow the wizard to repair the MS Office.

After the repair is completed, restart the system and Outlook.

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Classic Outlook crashes can occur due to various reasons, including compatibility issues, corrupt or broken PST files, virus or malware infections, incorrect registry files, and unnecessary add-ins.

The crash event from the Windows Event Viewer Application Log may have a similar signature, with the faulting application name being OUTLOOK.EXE, and the faulting module name being OLMAPI32.DLL.

Outlook may crash when starting a new email, replying, or forwarding an email, especially after updating to a specific version. The crash event details can be found in the Windows Event Viewer Application Log.

The issue may occur on all Microsoft 365 Office channels, including virtual desktop infrastructure (VDI), and started occurring in all production channels and versions of classic Outlook with the June 10, 2025, public updates.

The crash event details may include a faulting application name of OUTLOOK.EXE, a faulting module name of OLMAPI32.DLL, and an exception code of 0xc0000409.

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