Thunderbird 145 & 147 - frequent errors connecting to server "outlook..."
This just started 4 or 5 days ago ( 2026.1.23 ish). I did not update TB nor make any changes to the account in question (that I'm aware of). The errors show up every few minutes, with a 'beep' sound and notification pop-up showing up each time - is very annoying.
I was running v145 when it started. I saw there was an update to 147 and installed that; same issue. I restarted TB into Troubleshooting mode and am still getting the error.
This is running on MacOS 15.7.3. Hardware is MacMini (2024) with Apple M4 chip.
Generally I still seem able to received & send emails.
I opened Activity Manager and Error Console. Error console doesn't seem to have much (using 'Multiprocess', with Errors, Warnings, Logs, Debug enabled). Activity manager shows things such as:
<my account name>
Connection to server outlook.office365.com was interrupted. 09:49 Failed to connect to server outlook.office365.com. 09:52 Authentication failure while connecting to server outlook.office365.com. 09:58 Authentication failure while connecting to server outlook.office365.com. 10:03 Connection to server outlook.office365.com was interrupted. 10:10 Connection to server outlook.office365.com was interrupted. 10:14 Connection to server outlook.office365.com was interrupted. 10:20
There was an error or log entry that I was able to find a few days ago that made me think it was Calendar related, but now I'm not finding that message.
