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You can try setting up a new Outlook profile and remove the older one in such a case. The Outlook may keep crashing if the Outlook profile associated with your Office 365 account is corrupt or damaged. Read more, How to backup your OST file data? 3. If Outlook is still crashing, try uninstalling MS Office completely from the system using the Office Uninstall Support tool and install it again.

In such a case, you can try repairing the MS Office installation or reinstalling the MS Office. Sometimes, problems with the Outlook or MS Office program files can lead to such issues. However, if this doesn’t resolve the Outlook 365 crash issue, follow the next solution. If it crashes again, uninstall the last activated add-in, after which Outlook starts to crash. To find which one is the culprit, enable each add-in and observe Outlook. If Outlook doesn’t crash, it means one or more add-ins are responsible for the Outlook 365 crash.

To fix the issue, you need to find out what’s causing Outlook to crash when configured with Office 365 email account. Although Outlook for Office 365 is a robust email messaging and calendaring client, it may freeze, stop responding, or crash due to several software or hardware-related issues.
