Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. An unexpected error has occurred

Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. An unexpected error has occurred

This error might be a doozy to repair. This specific error was coming up each time the computer restarted and would make a new profile when trying to open Outlook. This is usually not a Microsoft Exchange issue but a Windows/Outlook issue. I know how to troubleshoot Outlook pretty fast and each one of these small efforts were what I tried to eventually get it fixed. If you are not fast and don’t know what you’re doing, you might want to call me to help.

• All Windows updates were current, very important to check this first and 1909 is almost required at this point.
• The Windows account was logged into a weird Microsoft account, signed out and went local. Signing into Windows with an email account also in Outlook can have issues.
• Deleted all the credentials for Office 365
• Downloaded 32 bit Office 365
• Deleted the registry keys for Outlook (back up first!)
• Removed all the profiles in the mail app in control panel –if you need to do this, backup the OST files before deleting the profiles
• Reset passwords
• Launched Word and logged in with the Office 365 account