If EmailMerge365 is not loading correctly or displaying outdated information, clearing the Outlook add-in cache may resolve the issue.
Before clearing the cache, first try removing the sideloaded add-in if applicable.
Classic Outlook on Windows
Step 1: Close Outlook
- Close Microsoft Outlook completely
- Open Task Manager and ensure no Outlook.exe processes are running
Step 2: Clear the Wef Cache Folder
- Press Windows + R
- Open the following folder:
%LOCALAPPDATA%\Microsoft\Office\16.0\Wef\
- Delete all contents inside the folder
Step 3: Clear the HubAppFileCache Folder
%userprofile%\AppData\Local\Microsoft\Outlook\HubAppFileCache
Delete all contents inside the folder.
Step 4: Restart Outlook
- Reopen Outlook and launch EmailMerge365 again.
- Outlook will automatically rebuild the cache.
If the Issue Persists
- Restart your computer
- Sign out and back into Outlook
- Reinstall the EmailMerge365 add-in if needed
- Contact your IT administrator or support team
Article ID: 406, Created: 5/19/2026 at 6:19 PM, Modified: 5/19/2026 at 7:05 PM