Hi, how do I fix this issue: I accidentally deleted my corrupted .ost/OST data file for Outlook 2019. When I tried to reopen Outlook:
"Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. Errors have been detected in the file C:\Users\Smart\AppData\Local\Microsoft\Outlook\XXXX - XXX.ost."
@DaueMad83 One option besides starting Outlook in SafeMode could be to create a new Outlook profile. You can create a new Outlook profile by going to "Control Panel" > Mail > "Show Profiles", "Remove" the profile and click Apply. Now when you next start Outlook it will create a new profile for you.