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# I get the add-in error saying 'the add-in cannot be started'

If you try to open SlideHub add-in and get the error saying 'The add-in could not be started. Please restart all Office applications and try again”, this is most likely a cache issue and clearing local cache should solve the problem. 

Below is a step-by-step guide on how to solve it:

1. Close PowerPoint and all the Office applications completely.

2. Paste the following paths directly into the Windows File Explorer address bar and locate the folders: %LOCALAPPDATA%\Microsoft\Office\16.0\Wef  &  %LOCALAPPDATA%\Microsoft\Office\16.0\WebServiceCache

3. Delete the content of the folders (note: not the folders themselves)

4. Once cleared, reopen PowerPoint and try the add-in again.

|| If the issue persists, you can reach out to our [__Customer Success Team__](mailto:success@slidehub.com) and we will try to help you!