Installation of kb4038777 on 2008 R2 domain controllers causes LDAP to break for certain applications

after much troubleshooting this morning, we were forced to uninstall kb4038777 on our 2008 r2 domain controllers and restart them. it appears LDAP authentication is failing over port 389 for a handful of our applications, as well as our production mailarchiva instance.

this patch also broke our staff’s ability to push new data to our on-premise gitlab instance; process results in a 502 error page. removing the kb4038777 patch resolved the issue.

was curious if anyone else had seen / experienced similar.