Getting redirected back and forth to homepage


I just upgraded to 7.13.5 [ minor version upgrade only ] - and it seems since then, if I visit the homepage I’m getting a 502 Error (Too many redirects).

==> /var/log/gitlab/gitlab-rails/production.log <==
Started GET “/” for at 2015-08-17 10:14:11 +0100
Processing by RootController#show as HTML
Redirected to
Filter chain halted as :authenticate_user! rendered or redirected
Completed 302 Found in 7ms (ActiveRecord: 2.9ms)

I did go through the admin page to see if there were any new values or weird values but I don’t remember changing anything. I did have a non-functional ActiveDirectory (LDAP) configuration enabled - I have reverted that change but still the problem persists.

I can get around the issue by going to the page.

Any idea what I may have changed that is causing this?