I have had an issue that has been bugging me for the past couple of days. Every time I tried to login into one of my other Google accounts, after entering the username, the password page would just refresh back to the username page.
Google support was pretty unhelpful – I got the standard, delete all cookies and cache. I was also told to disable/delete Chrome extensions. Nothing worked.
I found the solution that worked for me.
I toggled Allowed to off and opened a new tab. Then went back and turned on as most pages need JS.
Hey presto, I could login to my Google, Gmail and YouTube accounts again.