Hi @Alex Chung ,
Welcome to our forum!
Is everything Ok in safe mode?
What's the version of your Outlook? (File > Office Account > About Outlook). Please make sure you have upgraded your Outlook to the latest version.
In addition, i notice that your Outlook shutdown suddenly, have you done any specific operations before that?
According to your description, i notice that you have tried disabling add-ins, it's suggested that you could try other steps mentioned in this article:
Outlook not responding, stuck at "Processing," stopped working, or freezes
Hope to help you!
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