Symptom
Sometimes, Outlook Add-in can fail to load, it might display nothing or wrongly display the interface.
Workaround
Clear cache of the browser and Outlook because the cache contains out-of-date scripts, css, image files.
Clear the following cache data on the default browser:
To delete Outlook cache:
- Outlook for Windows: delete content of the folder %LOCALAPPDATA%\Microsoft\Office\16.0\Wef
- Outlook for MAC: delete content of 2 folders:
- ~/Library/Containers/com.microsoft.Outlook/Data/Library/Caches
- /Users/{your_name_on_the_device}/Library/Containers/com.Microsoft.OsfWebHost/Data/
If this fails, try deleting the settings xml file for the user
C:\Users\Username\AppData\Local\Add-On Products\Resource Central\Add-in
Delete the settings.xml