Goggle APIS with C# via proxy

Question

I’m trying to connect in Google drive through Google.But here in my service has proxy and when I try to get the credential it gives error requesting proxy authorization. (opened browser accessed a page it asks password, if close the browser and open again it will ask again). I’ve tried proxy config but it doesn’t work. so much so that I can’t even log into my Visual Studio account it asks for email and password but then gives error that proxy authentication is required. Has anyone been through this? Do you have a solution? Already looked at several cases in stackflow pt and en and nothing solved. Releasing in proxy is not an option unfortunately.

It follows a piece of code that error occurs. occurs when it goes into Googlewebauthorizationbroker.Authorizeasync to connect. ...

using (var stream = new FileStream(@"D:\client_secret.json", FileMode.Open, FileAccess.Read))
            {
                String FolderPath = @"D:\";
                String FilePath = Path.Combine(FolderPath, "DriveServiceCredentials.json");
                credential = GoogleWebAuthorizationBroker.AuthorizeAsync(
                    GoogleClientSecrets.Load(stream).Secrets,
                    Scopes,
                    "user",
                    CancellationToken.None,
                    new FileDataStore(FilePath, true)).Result;
            }