I know this question was already asked many times, but still It seems to throw this error altough I tried several url addresses.
I\'m trying to make facebook login throu
For the benefit of searchers, I had the same when creating a test version of a site.
The answer was to go into the facebook site > Apps > My App > Settings > 'Advanced' tab and add the localhost address in the section titled 'Valid OAuth redirect URIs'.
Note: The same style of work will be required for an xyz.azurewebsites.net domain as well as a .com when you are testing.