POSTing user credentials to login.fcc fails to login intermittently and reports following error in the webagent trace log.
[FORM Credentials have timed out and will not be used to authenticate.]
Web Agent R12.52SP1
This use case involves 'fcccompatmode=yes' in ACO.
When you submit user credentials to the login page, the authentication does not happen at that point.
Instead, the user credentials are stored in the FORMCRED cookie which has life span of 5 minutes.
The browser will then redirect to the requested TARGET URL and submit the FORMCRED cookie for Authentication.
At this point, the FORMCRED cookie was deemed expired hence the message "[FORM Credentials have timed out and will not be used to authenticate.]"
Release : 12.52 SP1
Component : Web Agent
Ensure all servers are timely synchronized.
If the server time hosting the login page and the server hosting the target URL is different then this issue can occur.