c# - 401 Unauthorised Error Recieved -

i using habbo api check if name valid. i'm recieving 401 unathorised error.

below code i'm using. worked when copied cookie header in chrome , added header. there way , actual fix?

    private void form1_load(object sender, eventargs e)     {         try         {             using(webclient webclient = new webclient())             {                 webclient.headers.add("user-agent", "mozilla/5.0 (linux; u; android 4.0.3; ko-kr; lg-l160l build/iml74k) applewebkit/534.30 (khtml, gecko) version/4.0 mobile safari/534.30");                 messagebox.show(webclient.downloadstring("https://www.habbo.com/api/user/avatars/check-name?name=123"));             }         }         catch (exception ex)         {             messagebox.show(ex.tostring());         }     } 

the api https://www.habbo.com/api/user/avatars/check-name referring wont load without proper authorization token, since 1 not public available.

to further test, use public api https://www.habbo.com/api/public/users?name=

you able response without issues.