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DaueMad83's avatar
DaueMad83
Copper Contributor
Jan 13, 2022

Deleted OST file for Outlook 2019, Outlook won't open

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."

(XX -  for my privacy) My platform is Win10.

Thanks.

 

  • 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.

     

     

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