Information

app.UseGoogleAuthentication Does Not Accept 2 Arguments - Azure Tutorial

EDIT: 2014-07-03 MSDN just posted a blog shedding light on why this change was introduced. Long story short, Google likes breaking things for you.

If you’re following the tutorial Deploy a Secure ASP.NET MVC 5 app with Membership, OAuth, and SQL Database to an Azure Web Site you may get this error when you get to the Google auth section.

The Problem

The two parameter overload is a new feature in Microsoft.Owin.Security.Google version 2.1.0.

The Fix

You just need to upgrade the nuget package.1

  • I first installed Visual Studio 2013 Update2. This may not be strictly required, YMMV.
  • Right click and remove the reference to Microsoft.Owin.Security.Google from your project
  • Reinstall the package with nuget:
Package Manager Console
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Install-Package Microsoft.Owin.Security.Google

That upgraded all the OAuth providers to work.

It’s a shame that VS generates boilerplate that doesn’t even compile. A meaningful warning would be nice.

Addendum

A lot of the commenters on the tutorial appear to be skimming along and not reading. If you’re having more trouble because you literally pasted

App_Start\Startup.Auth.cs
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2
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app.UseGoogleAuthentication(
       clientId: "000-000.apps.googleusercontent.com",
       clientSecret: "00000000000");

into your code, note that the author links you to another walkthrough wherein you register your app with Google. Make sure you do that too, and use your real clientId and clientSecret codes.

  1. 1.You may be able to avoid all three of these steps by just running Update-Package Microsoft.Owin.Security.Google. I'm new to this, and I guess I like doing things the long way. ↩