When users try and use the Mimecast for Outlook Add-in they login and get Application Disabled
- Make sure this is ticked
- Restart Outlook then try again
- Sometimes Mimecast caches Authentication Profiles locally in C:\Users\%username%\AppData\Roaming\Mimecast\msw.s3db , Delete this file with Outlook closed and try again
Trackback from your site.