Quote: Downloading https://.../PrivateBrowser.exe.config did not succeed.
The remote server returned an error: (404) Not Found.
I assume you're hosting your files on IIS. By default IIS is configured not to allow static files to be downloaded unless they have been configured with a valid MIME type.
files are particularly sensitive - you wouldn't want random people to be able to download your
If you're hosting in IIS, you should make sure the "Use .deploy file extension"
option is selected when publishing your application. You can then configure IIS to allow download of
Server/client configuration issues in ClickOnce deployments - Visual Studio | Microsoft Docs