I had VS 2013 (upgrade to update 4) installed for some time and logged into my MSDN account. A week or so ago, when I went to publish a site to Azure, it started prompting me to login again. It had an error, but unfortunately I didn't note down what it was.
When I closed out of that screen I was logged off. When I tried logging in again the login window just says "Sorry, we ran into a problem" and "Exception has been thrown by the target of an invocation."
Log of the issue:
User:IdeUser, Exception has been thrown by the target of an invocation.: TargetInvocationException [inner: Method not found: 'Void Newtonsoft.Json.Serialization.DefaultContractResolver.set_IgnoreSerializableAttribute(Boolean)'] during ExplicitSignIn
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes, StackCrawlMark& stackMark)
at System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes)
at System.Activator.CreateInstance(Type type, Object[] args)
at Microsoft.VisualStudio.Services.Client.VssConnection.GetClientInstance(Type managedType)
at Microsoft.VisualStudio.Services.Client.VssConnection.GetClientServiceImpl(Type requestedType, Func`2 getInstance)
at Microsoft.VisualStudio.Services.Client.VssConnection.GetClientServiceImpl[T](Func`2 getInstance)
at Microsoft.VisualStudio.Services.Client.VssConnection.GetClient[T]()
at Microsoft.VisualStudio.Services.Client.VssServerDataProvider..ctor(VssConnection server, String fullyQualifiedUrl)
at Microsoft.VisualStudio.Services.Client.VssConnection.EnsureProviderConnected()
at Microsoft.VisualStudio.Services.Client.VssConnection.ConnectAsync(VssConnectMode connectMode, IDictionary`2 parameters, CancellationToken cancellationToken)
at Microsoft.VisualStudio.Shell.Connected.ConnectedUser.VssConnectionWrapper.ConnectAsync(VssConnectMode connectMode, String user, CancellationToken cancellationToken)
at Microsoft.VisualStudio.Shell.Connected.ConnectedUser.IdeConnector.<ConnectAsync>d__1.MoveNext() (ActivityId: 00000000-0000-0000-0000-000000000000)
I tried repair installing, uninstalling and then installing VS 2013 w/ Update 4 already integrated, but continue to get this error. Any ideas?