Productsigned Mac app not installing in computers that are not mine

Question

I have a Mac app which I have signed using the \'productsign\' command from the terminal

productsign --sign \"3rd Party Mac Developer Installer: My company          


        

Answer 1

Certificates Matter

These are the certificates you will need to use together for codesigning:

• Developer ID Installer

• Developer ID Application

  • 3rd Party Mac Developer Installer (usually only used for the AppStore apps).

The "Developer ID Installer" certificate is what you would use if not submitting to the AppStore. For codesigning portions specifically, you need to use the "Developer ID Application" certificate.

Apple Developer Codesigning Workflow Guide