Google API Client Library freezing up in IIS when making request

Question

I have been using the Google API Client Library for .NET for loading Google Analytics data into my application:

Recently though I have found it to have started freezing up completely. The Execute() command makes a connection to the Google server.

It makes a successful request to :

 https://accounts.google.com/o/oauth2/token

which returns something like :

{
  "access_token" : "ya30.HAKlQSGZo2GnK5wxlxx9TLTQUyD9Xkt7AZxuQnDY-KhJuCyrCtN_xHIP",
  "token_type" : "Bearer",
  "expires_in" : 3600
} 

But then never returns from the Execute call.

The same code in a console app returns immediately, but in IIS it is currently never returning.

In a previous version it worked just fine (I'm not exactly sure which version it changed).

I have Load User Profile set to true.

What could be causing this?

   var SERVICE_ACCOUNT_PKCS12_FILE_PATH = @"C:\TEMP\GoogleAnalytics-privatekey.p12";
   X509Certificate2 certificate = new X509Certificate2(SERVICE_ACCOUNT_PKCS12_FILE_PATH, "notasecret", X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);


   // Create credentials (not my real login here)
   ServiceAccountCredential credential = new ServiceAccountCredential(
      new ServiceAccountCredential.Initializer("86987278011-ctegcus4og7kn6oigkrv8po5pf67bbgj@developer.gserviceaccount.com")
      {
          Scopes = new[] { AnalyticsService.Scope.AnalyticsReadonly }
      }.FromCertificate(certificate));

   // Create the service
   var service = new AnalyticsService(new BaseClientService.Initializer()
   {
       HttpClientInitializer = credential,
       ApplicationName = "Google Analytics Application",

   });

   // get accounts
   accounts = service.Management.Accounts.List();
   var items = accounts.Execute();

Answer 1

As explained in Google Calendar API - Not Returning From Execute() C#, we currently have a bug in the latest version of Google.Apis.Auth v 1.9.3.

We already have a fix for it, in our repository (https://github.com/google/google-api-dotnet-client), so you can test it yourself with the Analytics API (https://developers.google.com/resources/api-libraries/download/analytics/v3/csharp).

A new release of the library is planned to be in the next few weeks so stay tuned - http://google-api-dotnet-client.blogspot.com/

Update (Dec 15th): New NuGet packages for 1.10.0 are available, read more about it at: http://google-api-dotnet-client.blogspot.com/2015/12/announcing-release-of-1100.html