Product:
Cognos BI 10.2.2 fix pack 7
Microsoft Windows 2012 R2 Server

Problem:
When user in IE surf to Cognos Connection to login they get a AAA-SYS-0001 error.

Error Message:
AAA-SYS-0001 : An internal error occurred.
java.lang.RuntimeException: A visa already exists for this namespace.java.lang.RuntimeException: A visa already exists for this namespace.
at com.ibm.cognos.camaaa.internal.auth.PassportImpl.add(PassportImpl.java:102)
at com.ibm.cognos.camaaa.internal.auth.handler.CreateApplicationLogonSession.handleMessage(CreateApplicationLogonSession.java:252)
at com.ibm.cognos.camaaa.internal.common.handler.HandlerWrapper.handleMessage(HandlerWrapper.java:172)
at com.ibm.cognos.camaaa.internal.auth.handler.AuthHandlerChain.invokeHandlersForward(AuthHandlerChain.java:79)…

Suggested Solution:
Inside Internet Explorer, clear the cache and try again.
Press CTRL+SHIFT+DELETE to bring up the “delete browsing history” dialog.
Press Delete.
Restart Internet Explorer and try again.