Hard to say. Maybe you can try to run this in command line to clear cookies. I hope Microsoft left some parts in the system. RunDll32.exe InetCpl.cpl,ClearMyTracksByProcess 2
So with this file host, it asks to open internal browser and login in and that checks account and works (i guess until cookie expires) problem I'm having is when I click link to open internal browser it closes before I can type in username and password. I didn't have a problem before.