topic Re: RADIUS Authentication @ FAILED in Network Access Control https://community.cisco.com/t5/network-access-control/radius-authentication-failed/m-p/1259341#M348717 <HTML><HEAD></HEAD><BODY><P>Any time you "internal error" it means ACS has tripped over itself. Generally this is either a bug (possibly already fixed) or an unexpected error condition arising from a mis-config.</P><P></P><P>You'll need to speak to the TAC</P></BODY></HTML> Mon, 10 Aug 2009 11:12:55 GMT darpotter 2009-08-10T11:12:55Z RADIUS Authentication @ FAILED https://community.cisco.com/t5/network-access-control/radius-authentication-failed/m-p/1259340#M348673 <P>Hello Everybody</P><P></P><P>I have a ACS Appliance running version 4.2 ==&gt; ACS 4.2.0.124.12-Fix where the function is just for authenticate users by </P><P>protocol RADIUS against a Active Directory - Microsoft.</P><P></P><P>The Remote Agents are running, AAA Clients and Server are OK and the External User Database (AD TREE) are mapped. </P><P></P><P></P><P>When starting a authentication it doesn't work and in the FAILED ATTEMPS ACTIVE, the AUTHENTICATION CODE FAILURE is " INTERNAL ERROR "</P><P></P><P></P><P>Which tests can i perform ?</P><P></P><P>I doesn't found good documentations about " INTERNAL ERROR "</P><P></P><P>Thanks</P> Sun, 10 Mar 2019 23:38:00 GMT https://community.cisco.com/t5/network-access-control/radius-authentication-failed/m-p/1259340#M348673 tiagomsdias 2019-03-10T23:38:00Z Re: RADIUS Authentication @ FAILED https://community.cisco.com/t5/network-access-control/radius-authentication-failed/m-p/1259341#M348717 <HTML><HEAD></HEAD><BODY><P>Any time you "internal error" it means ACS has tripped over itself. Generally this is either a bug (possibly already fixed) or an unexpected error condition arising from a mis-config.</P><P></P><P>You'll need to speak to the TAC</P></BODY></HTML> Mon, 10 Aug 2009 11:12:55 GMT https://community.cisco.com/t5/network-access-control/radius-authentication-failed/m-p/1259341#M348717 darpotter 2009-08-10T11:12:55Z