For about 2 days I've been getting strange authentication errors when I try to connect to my hotmail account using Thunderbird. I
can connect and authenticate using
the outlook website to my account using the same account and password.
My account details haven't changed and I haven't changed any configuration options in Thunderbird which has been working flawlessly for several years previously. Now I can't view any of my mail folders through thunderbird. Whenever Thunderbird tries to connect I get:
The current operation on 'Inbox' did not succeed. The mail server for account [account name] responded: User is authenticated but not connected.
Server [account name] has disconnected. The server may have gone down or there may be a network problem.
According to the Office 365 Service Status Site there was a problem sending and receiving mail in Europe, but I am not in Europe and I can;t even connect to my mail inn order to send mail.
I reset the cached password in Thunderbird and immediately received a message (in my backup email) saying unusual account activity and asking to verify my account. (so the server is certainly receiving the authentication request.
I have tried removing the account in Thunderbird and when I add it back, it fails with the same messages each time.
How can I regain access to my hotmail account with Thunderbird?
EDIT: Update Sep 28
Yesterday (Sep 27) I noticed that Thunderbird displays my IMAP folders. This is the first time since I re-created my hotmail account in Thunderbird that I've seen anything but Inbox folder, so progress.
Today (Sep 28 2017) I have full access to my account again from Thunderbird.
Since I haven't changed anything on my side, Microsoft is obviously working on related issues. Hopefully everyone else also regains access once again.