Hi, We get a schannel 36888 51/1306 when we try to connect to IIS 7.5 running on a Windows Server 2008 R2 Enterprise configured for TLS1.2 and ECC server certificate and mutual authentication being turned on. The SSL client that we are using sends the client certificate and the server is resetting the connection. The setup was verified with IE9 and it works fine. Is there any explanation for schannel 36888 51/1306? Thanks, Dnyanesh

Hi, Please have a look at the following threads: Error 36888 Schannel http://social.technet.microsoft.com/Forums/en-CA/winservergen/thread/55d1de30-f87e-4fc9-9173-7c9cabfa7d00 Schannel error, Event ID 36888? - IS there a way to Identify what causes Schannel to log error? http://social.technet.microsoft.com/Forums/en/winserverDS/thread/4c5430f5-43f6-41b4-97d3-03cfb3efa70b Hope it helps. Regards, Bruce This posting is provided "AS IS" with no warranties, and confers no rights. Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Bruce, What does internal error state 1306 mean? Is there any reference document for the internal error states? Thanks, Dnyanesh

That should be related to iis. you can ask on iis forum http://forums.iis.net/