Topic on Extension talk:LDAP Authentication

This "LDAP Authentication" plug-in is basically unmaintained. It does not work correctly in MediaWiki 1.27 or newer.

Do not waste your time trying to integrate MediaWiki with enterprise systems. It is not properly supported.

The fact that it runs successfully on wikitech:Special:Version proves the opposite.

The copy on Wikitech is updated by the WMF but much of the functionality has been stripped. Major parts of the extension are un-maintained.

These three steps worked for me (on WIMP):

First manually create an account for an AD user as per Ryan Lane's blog. Then login with this account (using LdapAuthenticationPlugin, but not AutoAuthentication)

$wgDisableAuthManager = true; //Disable the newly introduced Mediawiki authentication scheme that is incompatible with AutoAuth. Weird thing is that LdapAuthenticationPlugin without auto-login is unaffected.

Run >php wiki\maintenance\update.php to build ldap tables (after login as manually created AD user)