If you see the error QuickBooks - Application with Revoked Certificate when you try to sync QuickBooks with a third-party application don’t worry, we’ll help you fix it. This usually happens because the QuickBooks Web Connector digital certificate expired.
1. Update all versions of QuickBooks Desktop to the latest release.
2. Select the your version to download the QBWebConnector.exe. If you have more than one version installed select the download for the latest version
3. Close all versions of QuickBooks completely.
4. Rename the QBWebConnector.exe:
For 64 bit Windows - C:\Program Files (x86)\Common Files\Intuit\QuickBooks\QBWebConnector\.
For 32 bit Windows - C:\Program Files\Common Files\Intuit\QuickBooks\QBWebConnector\QBWebConnector.exe..
5. Go to File and select Open New Window.
6. Open Downloads then copy the QBWebConnector.exe you downloaded in step 2 to the folder you used in step 4.
7. Reopen QuickBooks Desktop and use Web Connector.
For a direct link to the QuickBooks article, go here.
Click here to find more solutions to common QuickBooks Errors