I have the same issue, Outlook will not start at all, and just says "Something is wrong with one of your data files..." I have 3 email addresses, One is an Outlook address, and the other two are MAPI. The problem file is one of the MAPI accounts.
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The issue seems to happen with Outlook 2016 client in C2R-Installs (Office 365). There is a Workaround to fix that Outlook crash, caused by a broken PST file - see my blog post below from June 22, 2020: Outlook:
June 2020 updates and PST issues?
This night (June 24, 2020) Microsoft has released
this support article, confirming the bug and also my explanations given in den blog post.
Blogs: http://www.borncity.com/blog /(Ger) - and - http://borncity.com/win/ (EN)
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Question Info
Last updated January 28, 2021
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