we are using EP 7.0 on UNIX.
In the first login screen of EP, even after entering valid user ID & password we are getting the same login page with the User ID field filled and password field empty, without showing any error messages. If we enter incorrect user ID or password it says "user authentication failed". This is happening for all valid user IDs (even for super administrator).
we have tried to resolve the problem by restarting the portal server, but it does not work.
we are able to start or stop the portal server and also able to login to the Visual administrator.
We have already checked issues related to browser cookies settings and security level and it is all ok and not the cause of this problem.
any help would be appreciated.
Narendra kumar E