Hello!
Problem: an error occurres when unlocking device:
“Error logging into the Windows Phone Dev Center. Check your Microsoft Account credentials and try again.”
Approximate date when problem started occurring: March 2, 2018
Wp developer registration (8.1) is used to unlock device.
Verifying login information for the account is complete.
Standart recommendations (network, date, time, etc) are fulfilled.
Please advise on possible problem solution.