https://community.cisco.com/t5/network-access-control/ise-authentication-failed/m-p/5036257#M587975 <P>Computers added to the AD domain cannot perform 802.1X authentication</P> Fri, 08 Mar 2024 03:28:07 GMT Yang Li 2024-03-08T03:28:07Z https://community.cisco.com/t5/network-access-control/ise-authentication-failed/m-p/5036256#M587974 <P>Event 5400 Authentication failed<BR />Failure Reason 22056 Subject not found in the applicable identity store(s)</P><P>Event 5400 Authentication failed<BR />Failure Reason 11514 Unexpectedly received empty TLS message; treating as a rejection by the client</P><P>&nbsp;</P> Fri, 08 Mar 2024 03:27:21 GMT https://community.cisco.com/t5/network-access-control/ise-authentication-failed/m-p/5036256#M587974 Yang Li 2024-03-08T03:27:21Z https://community.cisco.com/t5/network-access-control/ise-authentication-failed/m-p/5036257#M587975 <P>Computers added to the AD domain cannot perform 802.1X authentication</P> Fri, 08 Mar 2024 03:28:07 GMT https://community.cisco.com/t5/network-access-control/ise-authentication-failed/m-p/5036257#M587975 Yang Li 2024-03-08T03:28:07Z https://community.cisco.com/t5/network-access-control/ise-authentication-failed/m-p/5036262#M587977 <P>There is nowhere near enough information here to provide any meaningful help. See&nbsp;<STRONG><A href="https://community.cisco.com/t5/security-documents/how-to-ask-the-community-for-help/ta-p/3704356" target="_blank" rel="noopener">How to Ask the Community for Help</A></STRONG></P> <P>Just from the error you're seeing, it looks like the client is dropping the connection. This could be due to various reasons including, but not limited to and invalid/expired client cert, the client not trusting the EAP cert presented by ISE, etc.</P> <P>If you search this space for that error message, you'll find many similar discussions on this topic.</P> Fri, 08 Mar 2024 03:44:01 GMT https://community.cisco.com/t5/network-access-control/ise-authentication-failed/m-p/5036262#M587977 Greg Gibbs 2024-03-08T03:44:01Z