Product Defect: 23459
This issue occurs with QAS 220.127.116.11 and QAS 4.0.1
What is happening is QAS code is establishing a connection to AD we call an LD. It is an encrypted connectiont that can be re-used. And QAS will re-use it. But this issue is when AD closes the connection on its end. W2008 does that more often. Older windows did it as well, but not as frequently. QAS wasn't handling the error properly. It was returing the LDAP operation issue, while now it re-establishes the connection on error. QAS itself (vasd) had its own old LD cleanup code so didn't suffer from this. It preemtivily closed down connections ( LDs ) that hadn't been used in the last two minutes.
We have seen this issue with Mod-Auth-Vas (MAV) for use with Apache Server and then this case with the proxy