The classic Outlook app crashes when you reply or forward messages, but there's a fix

To fix the classic Outlook, revert it to Version 2411

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Outlook classic crashes after update

If you updated the classic Outlook app to Version 2412 (Build 18324.20168), Microsoft acknowledges that the software may crash when you are replying or forwarding a message. It may also happen when you create a new message, making Outlook unusable.

In the Support document, Microsoft also recommends confirming the bug by checking the Windows Event Viewer Application Log  to spot a crash Event 1000 or Event 1001.

When you open the respective events, you can expect to find the following information:

Faulting application name: OUTLOOK.EXE, version: 16.0.18324.20168, time stamp: 0x677828da 
Faulting module name: OUTLOOK.EXE, version: 16.0.18324.20168, time stamp: 0x677828da 
Exception code: 0xc0000005 
Fault offset: 0x0000000001a7c02a 
Faulting process id: 0x0xFD0 
Faulting application start time: 0x0x1DB65D0FD0B9857 
Faulting application path: C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE 
Faulting module path: C:\Program Files\Microsoft Office\root\Office16\OUTLOOK.EXE

Microsoft also noted that it’s working on a permanent fix for the app that will be released on January 28, when Version 2501 Build 18429.20000 will be rolled out.

However, Microsoft also issued a workaround for this issue: revert the app to the previous version, 2411 (Build 18227.20162).

To do that, you need to open Command Prompt with administrative privileges and paste the following commands and clicking Enter after each:

  • cd %programfiles%\Common Files\Microsoft Shared\ClickToRun
    officec2rclient.exe /update user updatetoversion=16.0.18227.20162

You will also have to disable the updates for the app to prevent it from reinstalling the malfunctioning update. To do that, go to File > Office Account > Update Options > Disable Updates.

Just remember to revert this setting after Microsoft issues the permanent fix for the app. The software giant recommends setting a reminder for February 11 although, as we’ve mentioned above, they planned the update fix on January 28.

We remind you that Microsoft has made the Outlook (new) the default app even for Windows 10. Right now, you can still uninstall it and use the classic version, but that will not last indefinitely.

If your Outlook classic app crashes after the update, now you know what to do to fix it. For any questions or additional information, feel free to leave a note in the comments below.

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