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How do I fix "The application cannot be installed due to a certificate problem?"

Answered Closed

When trying to upgrade the G-Wizard software I get an error:

“The application cannot be installed due to a certificate problem. The certificate does not match the installed application certificate, does not support application upgrades, or is invalid. Please contact the application author.”

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Best Answer

Sometimes when the two versions are far enough apart and we’ve just updated our Digital Signing Certificates on the software, you will see a message like that. Fortunately, the fix is easy.  Use the Windows Control Panel or Mac Move to Trash to uninstall the G-Wizard software.  Once it is uninstalled, the new version should go in without a problem.

Note: Sometimes you uninstall the application and you still get this message. Every time this has happened we’ve traced it to another copy of the application, sometimes on a backup disk that isn’t even mounted. So, you will need to be thorough about tracking down the old ones.

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