ldap_bind(): Unable to bind to server: Strong(er) authentication required

[ssupport]

I had LDAP authentication to Active Directory working, then everything stopped and no one could log in. I have switched the authentication to internal through mysql and now i am able to log in. When i try to switch back to LDAP, i am running into this error:

• ldap_bind(): Unable to bind to server: Strong(er) authentication required [authentication.php:136 → CLdapAuthValidator->validate() → CLdap->checkPass() → ldap_bind() in include/classes/ldap/CLdap.php:114]
• LDAP: cannot bind by given Bind DN.

I have verified that the AD sync account username and password are correct. I have followed through the AD connect documentation, just to make sure i didn't miss anything.

I don't know what else to look at. Any help is appreciated.

[tim.mooney]

You need to ensure that the bind happens over an encrypted channel. Do some general web searches for that particular error message and active directory, you'll find hits like: https://superuser.com/questions/1358...ption-required