Outlook Error "The set of folders cannot be opened"

ERROR:



1. Go to the Windows search bar and type regedit. This will launch the Registry Editor.



2. Then, navigate to Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles (Outlook 2019,2016)


3. Now delete all the folders listed under Profiles.

Note: If you are using a different version of Outlook this will change as follows. Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Office\15.

4. Restart the computer.

5. Relaunch Outlook and recreate your email profile.