Application created with ClickOnce after setting EV certificate is displayed as "Unknown Publisher" during installation

Asked 2 years ago, Updated 2 years ago, 43 views

I am using Visual Studio 2019.
I asked a certain issuing agency to issue an EV code certificate and set up a driver and token on the development machine.After configuring the certificate with the startup project properties "Sign" and issuing it with ClickOnce, the client machine can now avoid SmartScreen, but the "Security Warning" says "Unable to verify the publisher."

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ClickOnce configuration sets the Issuer Name of the Public Option to the Token Name of the EV certificate, and checks the Manifest to Use Application Manifest for Trust Information.

Do I need other settings to set the publisher?
The application is a desktop application (WPF) and the target framework is .NET Framework 4.8.

windows visual-studio .net

2022-09-30 10:54

1 Answers

Hi Hirapon,
The same situation has occurred since November 2020.
There was no problem with VS until November 2020 (the time is a little around).
It has not been resolved yet.
It is difficult because there is not much information.


2022-09-30 10:54

If you have any answers or tips


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