If the problem no longer occurs, it confirms that one of the add-ins that you just disabled was causing the issue. However, we came across many users who are still struggling with this Outlook issue. They still wonder ‘Why is Outlook constantly not responding? ’ So, it is possible that your PST file will get corrupted and you can lose all important data. Or, if the problem is itself due to oversized PST getting corrupt, you need to recover PST data as soon as possible.

Outlook crashes or stops responding when used with Office 365

If the Outlook issue “outlook keeps crashing Windows 10” persists. Perfectly repair and recover corrupted Outlook PST &amp