I'm no expert at this, but until someone else comes along,,,,
Sometimes I have noticed this happen,,,, then the next day, it's back to normal.
Otherwise, in my case, when it asks for Name & Password, it's asking for authorisation from my B.Band account. I use Supanet/O.Express. When I get the same message I need to insert the B.Band Name & Address (to authorise the supanet use).
Hope this helps.