After installing the newest version of Thunderbird last night I have started getting an error message on one of our Microsoft email accounts. The error message is;
The RETR command did not succeed. Error retrieving a message. Mail server outlook.office365.com responded: Server Unavailable. 21
This only just started after installing the newst update to Thunderbird last night, but only on my primary account. We each have personal accounts plus an account for our Ranch, six in total, and all of the others still work fine. All of our accounts use the same POP/Server settings;
Server Type: POP Mail Server
Server Name: outlook.office365.com
Port: 995
Connection security: SSL/TLS
Authentication method: OAuth2
And of course I double checked and POP is still Enabled on Microsoft/Outlook just as it always has been.
It says connecting, acts like it authenticated, but then pops up that error message, but if you watch the status line at the bottom it shows 37 new mails to download as though it's about to download them, but then doesn't.
Stange thing is that it's only my primary personal account that is having the issue, our other 5 accounts all still work as they should. It was working fine before yesterday evening when the Thunderbird update installed and I have not changed any settings. I did go in and double check all the settings anyway both in Thunderbird and on Outlook/Microsoft and everything is as it should be, yet suddenly I keep getting the error on the one account?
Anyone know what's going on with this newest Thunderbird update?
