The Twitter login via the Twitter-Api and the "Twitterizer-Remaked For API 1.1" C# library returning a "401 unauthorized". Need help please


#1

The Twitter login via the Twitter-Api and the “Twitterizer for 1.1” C# library is not working for a colleague (in the usa) , he is getting a “401 unauthorized”.
The strange thing, for us (in germany) the login and posting is working fine with the same application on different systems.
Somebody has an idea? We really don’t know what else to do, because they cannot debug the system there.
It is a desktop application with callback parameter “oob” in the application itself and “http://www.localhost.com” on the twitter-website.