ClickOnce app signed but still shows "Unknown publisher"

I am developing windows app for the client.
Client provided me with Comodo certificate for code signing (pfx)
App publishing is done via ClickOnce

After signing the app I still got this:

Unknown publisher

in the install screen.
Any idea why , and how to fix this ?


You can follow this link to solve the issue of “Unknown Publisher”.

Still, after signed with Comodo code signing certificate, windows 8 smart screen still block my clickonce app for the first time. Anyone can shed some light please?

Some update.
After a dozen of installation, Smart Screen no longer shows the warning message.