InstantForum.NET v2.9.0SQLServerCentralhttp://www.sqlservercentral.com/Forums/notifications@sqlservercentral.comFri, 24 May 2013 07:36:53 GMT20http://www.sqlservercentral.com/Forums/Topic1382270-1550-1.aspx[quote][b]CuriousDBA (11/8/2012)[/b][hr]Yes. we have created SPN for all the servers including Virtual server Name (Cluster)[/quote]what do you mean all servers? The only SQL Server SPNs should be the ones created for the virtualnetworkname against the service account.Thu, 08 Nov 2012 06:04:42 GMTPerry Whittlehttp://www.sqlservercentral.com/Forums/Topic1382270-1550-1.aspxI am trying to access Server A ----> Server B (Linked Server A) ---> Client. Its working but some time getting this errorLogin failed for user 'NT AUTHORITY\ANONYMOUS LOGON'. We have configured SPN correctlyPlease adviceThu, 08 Nov 2012 05:39:35 GMTCuriousDBAhttp://www.sqlservercentral.com/Forums/Topic1382270-1550-1.aspxYes. we have created SPN for all the servers including Virtual server Name (Cluster)But I am confused with delegation settings, Do we need to set delegation for all the servers,including client(Client SQL Server) for Double hope?I am trying to access Server A ----> Server B (Linked Server A) ---> Client. Here i am getting this errorLogin failed for user 'NT AUTHORITY\ANONYMOUS LOGON'.Thu, 08 Nov 2012 05:02:42 GMTCuriousDBAhttp://www.sqlservercentral.com/Forums/Topic1382270-1550-1.aspxyou created the SPNs for the virtual network name against the sql server service account?Thu, 08 Nov 2012 04:46:59 GMTPerry Whittlehttp://www.sqlservercentral.com/Forums/Topic1382270-1550-1.aspxRecently we changed our Active-Passive cluster to Active - Active (Multi Instance). After this change,some of the users were unable to use double Hop connection from (Server A --> Server B[Linked Server A]-->Client).I notice some strange behaviour like some logins supports Double Hop only some timesAll server and users are using Windows Domain accounts.We tried to reconfigure SPN as well as Delegation, restarted the SQL Service, but still double hop connections are not workingPlease adviceWed, 07 Nov 2012 23:31:37 GMTCuriousDBA