On the sign in page I have entered my Adobe ID (Email Address) and password: The sign in page greys out and in the bottom right hand corner the little circle just keeps rotating.
I have removed by internet security from my computer and deflagged the pop-up blocker in my browser (Mozilla Firefox) but it did not make any difference.
Can you check date on your system.Please make sure you have today's date on your machine.
Also if you still not able to sign in please share some logs at firstname.lastname@example.org
Go to %temp% folder and share: