OOBA-109 — The OOB authentication server cannot release its session table
The out-of-band authentication server passes information about authenticated users to proxies in a shared session table file. The authentication server signals to proxies that it is running and the file is valid by creating a lock on the file. The lock also prevents more than one instance of the authentication server to use the file.
Before the server terminates, it unlocks the file. If unlocking fails, this message is logged and the file will be unlocked when the server parent process terminates. In such situation, reloading the server may fail and restart must be done instead.