Access to the path 'C:\Windows\system32\config\systemprofile' is denied when using Google.Api OAuth 2

Question

I am using Google Calendar Api with one of my project. I don't know how but Error Shown Below is troubling.

Code inside AppFlowMetadata.

public class AppFlowMetadata : FlowMetadata
{
    private static readonly IAuthorizationCodeFlow flow =
        new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
        {
            ClientSecrets = new ClientSecrets
            {
                ClientId = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com",
                ClientSecret = "xxxxx_xxxxxxxxxxxxxxxxx"
            },
            Scopes = new[] { CalendarService.Scope.Calendar },
            DataStore = new FileDataStore("Calendar.Api.Auth.Store")
        });

    public override string GetUserId(Controller controller)
    {
        var user = controller.Session["UserID"];

        if (user == null)
        {
            user = Guid.NewGuid();
            controller.Session["UserID"] = user;
        }
        return user.ToString();

    }

    public override IAuthorizationCodeFlow Flow
    {
        get { return flow; }
    }
}

I tried below solution from GitHub but isn't working

Above solution didn't worked for me, if any have the answer please help.

Answer 1

As per https://domantasjovaisas.wordpress.com/2014/09/27/demystifying-google-api-and-oauth2/ :

From code I just provided you can see that I’m using File2DataStore. It’s overridden by me. Standard FileDataStore I changed to my own needs. Standard FileDataStore stores auth keys in “C:\WINDOWS\system32\config\systemprofile\AppData\Roaming\Drive.Api.Auth.Store”

I don’t think so that you will allow IIS_IUSRS users access this location in production environment 🙂 Think twice, don’t do that. Rewrite FileDataSource to your own needs. Here is two examples how you can do it :

https://code.google.com/p/google-api-dotnet-client/source/browse/Src/GoogleApis.DotNet4/Apis/Util/Store/FileDataStore.cs http://www.daimto.com/google-oauth2-csharp/#FileDataStore

In short, you need to stop using FileDataStore and write your own replacement (using the above links as your starting points).