Heads up to anyone else as well who are using ldap queries to domain controllers.
https://support.microsoft.com/en-us/help/4520412/2020-ldap-channel-binding-and-ldap-signing-requirement-for-windows

Anyway the issue is I can't get TLK communication working with the ldap server. It will throw an error:
Could not connect to xxxx:636:389: Unable to bind to server xxxx:636

I tried with assigning port :636 and using default (no port). Same error. Without TLS all works fine.

Anybody have any ideas?

You haven't provided us with enough information about your LDAP setup to assist you.

I've been using TLS with the Authentication:: AD and LDAP plugin for a long time now with no issues.

9 days later

Hello everyone, I'm having the same issue described by @kristo993. Here's the error I'm receiving while configuring LDAP authentication plugin:

Any hellp would be much appreciated.

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