certificate breaks the program

[mhubel]

We have a situation where the unsigned .exe file works properly but after being signed with a certificate by the installer and then installed on a system, the program fails in moderately strange ways. As this program seems very well behaved prior to being put in an install package, it is not at all clear where to even look for the problem. The certificate is from COMODO RSA and is a "extended validation signing CA".
This is happening on windows 10.

[Catalin]

Hello,

This sounds like a strange behavior, indeed.

In order to sign a file, Advanced Installer uses the SignTool.exe tool, which is offered by Microsoft.

Could you please try to sign your .EXE file outside of Advanced Installer, using the tool specified above and see if the behavior still persists?

Best regards,
Catalin