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My Outlook 365 won't open after a Windows update yesterday Microsoft Q&A | #how to fix Outlook not opening today

My Outlook 365 won't open after a Windows update yesterday Microsoft Q&A

My Outlook 365 won't open after a Windows update yesterday Microsoft Q&A

After updating Office, you may experience a brief flashing window every hour, which triggers the OfficeBackgroundHandlerRegistration task to start running.