Wife brought me her HTC One (Windows phone) M8 and said hotmail was no longer synch'ng. Look at the email+accounts and it gives an error 80070057.
Tried everything including wiping phone. Still gives 80070057. If I try my hotmail account (which seems to be different than hers) it works.
Her's uses a server eas.hotmail.com
Mine used a server bay503-mail.hotmail.com or something like that.
If I place my account as the main "Microsoft account" which is the primary account and then add her's as a second account both accounts sync.
When I look at the account settings, when her's shows up as the 2nd account there is an additional line under the server that gives a checkbox (which is checked) saying account requires SSL. When I add her account as Microsoft account that does NOT show up. Seems strange.
Anyway. I've been on support with MS for over and hour and they don't seem to have an idea why this is happening.
Strangely, it seems to have happened right around the time VZ discontinued Visual Voicemail for this device. Coincidence?
In any event, I need to get this fixed. The phone is only 2 years old.