Hi Qusai, The solution is here http://isaserver.org/tutorials/error505.html That explains the certificate name mismatch error. HTH, Tom Thomas W Shinder www.isaserver.org/shinder <http://www.isaserver.org/shinder> ISA 2004 Beta - Get it now! http://www.microsoft.com/isaserver/beta/default.asp <http://www.microsoft.com/isaserver/beta/default.asp> ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp <http://tinyurl.com/1llp> -----Original Message----- From: Qusai A. AL Haddad [mailto:qusai@xxxxxxxxxxxxxx] Sent: Tuesday, June 15, 2004 2:23 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: 500 Error in ISA 2004 http://www.ISAserver.org Thanks Tom, I already did what is there in isaserver.org website, but still the same issue. Regards Qusai ________________________________ From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx] Sent: Tuesday, June 15, 2004 10:25 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: 500 Error in ISA 2004 http://www.ISAserver.org Hi Qusai, Go to ISAServer.org and enter in the Search box 500 and press enter. HTH, Tom Thomas W Shinder www.isaserver.org/shinder <http://www.isaserver.org/shinder> ISA 2004 Beta - Get it now! http://www.microsoft.com/isaserver/beta/default.asp <http://www.microsoft.com/isaserver/beta/default.asp> ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp <http://tinyurl.com/1llp> -----Original Message----- From: Qusai A. AL Haddad [mailto:qusai@xxxxxxxxxxxxxx] Sent: Tuesday, June 15, 2004 1:55 PM To: [ISAserver.org Discussion List] Subject: [isalist] 500 Error in ISA 2004 http://www.ISAserver.org Dear All, Any one know this error in OWA with SSL using ISA 2004-06-15 500 Internal Server Error - The target principal name is incorrect. (-2146893022) Regards Qusai