
After the folder is empty, Outlook automatically downloads the items from the Exchange server. On the General tab, click Empty Cache.In the navigation pane, Ctrl+click or right-click the Exchange folder for which you want to empty the cache, and then click Properties.

On the bottom left, click the gear icon and select Reset Account from the list.Ĭlear the Outlook "Old" (Mac) Cache - note this deletes any information not synced with the server.In the left pane, select the account you want to reset.ost file and rename it (you may need to Show Hidden Files and Show Extensions to see the file)Ĭlear the Outlook "New" (Mac) Cache- note this deletes any information not synced with the server In the Run window, type this path in the Open box "%LOCALAPPDATA%\Microsoft\Outlook\".ost file (if you get an error about "cannot open set of folders")

Delete all entries named Microsoft Office Identities Cache 2 and Microsoft Office Identities Settings 2 Delete all entries who type is MicrosoftOffice. Delete all entries for your Exchange account.

It will run diagnostics and attempt to fix the issue. If the steps below don't work, download and install the Microsoft Support and Recovery Tool. In this case, please contact your local ITS Support Team or the ITS Help Desk. In some cases, you may need administrative rights to update these settings. If you are continually being prompted for your password in Outlook try the steps below, one at a time, to resolve the issue.
