Office 365, outlook add-in icon does not update

Question

Developing an office 365, outlook add-in. Changed the add-in icon (Basically just replaced the old icons with new one. Icons have the same name.). Icon comes up fine on OWA but on Outlook 2016 add-in still, shows the old icon.

Troubleshooting steps till now :

• Uninstall reinstall add-in => no effect.
• Uninstall add-in, restart Outlook 2016, reinstall add-in => no effect.
• Reset customizations from 'Customize Ribbon' option inside 'Outlook Options' => no effect.
• Restarted server => no effect

validate-office-addin shows 'manifest.xml' as valid.

Answer 1

You need to delete the local cache. Delete the contents of %LOCALAPPDATA%\\Microsoft\\Office\\16.0\\Wef\\

Answer 2

我通过简单地重命名图标文件并相应地更新清单文件来解决它。