Unknown Publisher warning using Symantec EV Certificate

Question

My company purchased an EV Certificate from Symantec to use for a software product we produce. Specifically it is called: Symantec Class 3 Extended Validation Code Signing CA – G2.

We apply the Certificate to the execuatables and DLLs using signtool.exe, and this has accomplished our main goal of eliminating the SmartScreen warning during installation on Windows 8/8.1.

However, the install dialogs produced by our ClickOnce installer are showing:

Publisher: Unknown Publisher

We have tried everything we can think of to solve this including contacting Symantec Tech Support. They have not been able to help us, and could only advise us to call Microsoft for help. We thought asking here would take us further.

Has anyone else run across this problem? Might anyone know of a solution?

Answer 1

When using signtool try to use /d and /du options. I was having similar problems with activex installations and this helped me.

For more information please look at this page.