Post upgrade to GitLab 8.14.0, new user (AD) account created are not able to login.

gitlab-rake gitlab:ldap:check, can find existing accounts but not the new ones. What could be the issue?

tail -f unicorn_stdout.log I, [2016-12-21T17:30:26.740949 #1866 (closed)] INFO -- omniauth: (ldapmain) Callback phase initiated. E, [2016-12-21T17:30:26.767727 #1866 (closed)] ERROR -- omniauth: (ldapmain) Authentication failure! invalid_credentials encountered. However, existing users (AD) can login without any problem System information System: Ubuntu 14.04 Current User: git Using RVM: no Ruby Version: 2.3.1p112 Gem Version: 2.6.6 Bundler Version:1.13.6 Rake Version: 10.5.0 Sidekiq Version:4.2.1 GitLab information Version: 8.14.0 Revision: cde955c9 DB Adapter: postgresql Using LDAP: yes Using Omniauth: no GitLab Shell Version: 4.0.0