On login, an account from my client's company email address receives the following message:
"Access Denied You do not have access to this service. Contact your IT administrator to gain access, or sign in with an Adobe ID"
Here's some extra points:
>User has had no issues in the past
>No changes to privileges
>Email domain ends in co.uk
Side issue, I tried to open a support ticket, but once again, to my frustration, there was an error when I tried to submit. How ironic that the support system cannot support itself.
This sounds like a stale login cookie.
You should try having the user clear their Adobe-set cookies and login from scratch.
This often happens if significant changes in permissions have happened to the account or if they haven't used AA for a long time without signing in.