Ad Blockers and the DC/OS UI
During testing, we have observed issues with loading the DC/OS UI login page when certain ad blockers such as HTTP Switchboard or Privacy Badger are active. Other ad blockers like uBlock Origin are known to work.
Admin Router is the only entity verfiying DC/OS authentication tokens. To debug authentication problems, check the Admin Router on the masters using the following commands.
sudo journalctl -u dcos-adminrouter.service