CSCvi30280 - UserIdentity [ERROR] Error while handling UserLoginInfo message [1] Invalid Argument

[UpgradingToPaloAlto]

No way this is HA dependent.   

It's not "Fixed" either.

6.2.3.3-76 FMC Virtual.  Non-HA.

6.2.3.3-76 5545X SFR Sensors

Fail.

When the Firepower AD Agent service is stopped.  SF-IMS > SFDataCorrelator spamming stops. 

When the Firepower AD Agent service is started, so does the /var/log/message spamming.

The bug description is misleading with reference to system/versions impacted.  As well as stating it's fixed.

Let's see what TAC has to say after opening a case.  I can't wait for the response...

[UpgradingToPaloAlto · Accepted solution]

Upgrade 6.2.3.4 fixed, (or at least squelched) the /var/log/message spamming.  Solved.