How to clear cache in Outlook for troubleshooting purposes

Problem:

You need to clear cache in Outlook to troubleshoot issues with the CodeTwo Outlook add-in. For example:

• The add-in works in Outlook on the web but doesn't appear the classic Outlook for Windows.
• The add-in doesn't automatically add signatures to emails.

Solution:

Follow these steps to clear the Outlook cache in Windows: 

1. Open the classic Outlook for Windows and go to File > Options > Advanced.
2. Check if the Show Apps in Outlook option is enabled (see Fig. 1.).
   • If enabled: go to

     %userprofile%\AppData\Local\Microsoft\Outlook\HubAppFileCache

     and delete all contents of this folder.
   • If disabled: go to

     %localappdata%\Microsoft\Office\16.0\Wef

     and delete all contents of this folder.

Fig. 1. The Show Apps in Outlook option (enabled) in the classic Outlook for Windows.

3. Restart Outlook.

You can now verify if the CodeTwo Outlook add-in works as expected.