http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspxSomeone asked how to get the login dialog if the user fails to authenticate. The code to do that is shown below. I copied the call to the constructor from the basic API example , and I've added code to create and pass a UICredentialsProvider object toen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#553789Fri, 17 Mar 2006 18:16:53 GMT91d46819-8472-40ad-a661-2c78acb4018c:553789Ravi TeralaI recommend using TeamFoundationServerFactory for most purposes. You only need the constructor version if you need two TFS OM objects to the same server using two different credentials. http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#555477Mon, 20 Mar 2006 16:14:39 GMT91d46819-8472-40ad-a661-2c78acb4018c:555477Team System NewsJeff Beehler says Team Foundation Server Ships! &nbsp;And so does John Lawrence, complete with a picture of...http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#555761Mon, 20 Mar 2006 21:18:24 GMT91d46819-8472-40ad-a661-2c78acb4018c:555761hippietimI think you mean EnsureAuthenticated <br> <br>:Phttp://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#556052Tue, 21 Mar 2006 02:19:43 GMT91d46819-8472-40ad-a661-2c78acb4018c:556052Ravi Teralatfs = TeamFoundationServerFactory.GetServer(&quot;tfsurl <br>, new UICredentialsProvder()); <br>tfs.EnsureAuthenticated(); <br> <br>will give you the login dialog _if_ needed. It will grab the stored credentials from the stored user names and passwords control panel applet if it contains credentials for the TFS server. <br>http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#556157Tue, 21 Mar 2006 04:01:55 GMT91d46819-8472-40ad-a661-2c78acb4018c:556157buckhRavi, that's not correct. &nbsp;The TeamFoundationServer object does not write to or read from the stored user names and passwords. &nbsp;There was a time when it used it, but it was buggy and was removed.http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#755125Fri, 15 Sep 2006 05:36:40 GMT91d46819-8472-40ad-a661-2c78acb4018c:755125Buck HodgesOccasionally the question of whether to use the TeamFoundationServerFactory.GetServer() method or the...http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#4659183Fri, 31 Aug 2007 06:06:29 GMT91d46819-8472-40ad-a661-2c78acb4018c:4659183Buck Hodges<p>Occasionally the question of whether to use the TeamFoundationServerFactory . GetServer() method or the</p> http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#8960614Sun, 21 Sep 2008 20:41:54 GMT91d46819-8472-40ad-a661-2c78acb4018c:8960614Shai Raiten<p>How to get the login dialog when using the Team Foundation Server API Published On: Buck Hodges Blog</p> http://blogs.msdn.com/buckh/archive/2006/03/17/credentialprovider.aspx#9402875Sat, 07 Feb 2009 00:22:54 GMT91d46819-8472-40ad-a661-2c78acb4018c:9402875Suresh Behera<p>nwc = new NetworkCredential(tfsuid, TFSPass, TFSDomain); tfs = new TeamFoundationServer(TFSServerUrl</p>