Close Outlook
Open File Explorer
In the address bar, enter `%localappdata%MicrosoftOutlook`
Delete the contents of the Outlook cache folder
Open File Explorer
In the address bar, enter `%localappdata%MicrosoftOffice16.0OfficeFileCache`
Delete the files in the OfficeFileCache folder
Open Outlook
Go to `File`
Select `Options`
Select `Advanced`
Under `Outlook start and exit`, select `AutoArchive Settings` if needed
Go to `File`
Select `Account Settings`
Select `Account Settings` again
Select the email account
Click `Change`
Click `More Settings`
Go to the `Advanced` tab
Clear the `Download shared folders` option if applicable
Restart Outlook
If using Outlook on the web, clear the browser cache and cookies
If using the Outlook mobile app, clear the app cache from device settings or reinstall the app