Hello,
have a look at this KB:
if it applies, you should also take a look at the
log files, to see what is causing the false logins.
In our case, we can see following:
2096680e-81b8-4356-bb8b-63ec80c672d4, UserName : admin, AuthSource : LOCAL, Session : n/a, Category : LOGIN - Log in failed
in the logfile:
/storage/vcops/log/analytics.audit-XXXX.log
this started with the update from 7.5 to 8.0.
Well, we'll have to open a SR.
cheers
Chris