Note: This is for Windows 11 - 64 bit. Thank you!

Downgrading to 128.2.1esr restored functionality, but seems like something is seriously wrong here :(

Saw your post, Scott, when I was logged onto the group for something else. When I went to see what version I was running, Thunderbird, at that very moment, downloaded 128.2.2 and urged me to restart Tbird to install. With a bad feeling in the pit of my stomach I did just that, and then tested send/receive functionality; all is well, it sends and receives as usual. I'm running Win 10 Pro, however, and will probably cling to that version until I'm in my grave. My wife has Win 11 and I don't like it at all!

Interesting. If I don't downgrade to 128.2.1esr, everything breaks. When I do, it all works fine again. Appreciate your experience and hope someone else comments that has the same issue or I'm probably more in trouble and never able to update again..... :( Thank you!

Since 128.2.2esr which I got it today (2024-09-18), I cannot receive or send email for multiple accounts like gmail and office365 accounts. I downgraded to 128.2.0esr which I had installer in hard drive and with this version, everything works. But as soon as update to 128.2.2esr it's stops.

Start Windows in safe mode with networking enabled - https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode

Does problem go away?

Same issue here. Pressed About, and it downloaded and installed the 128.2.2esr update (already used 128 for a few days without any problem). After the update, no more new mail on any account. I've tried to disable all addons, and also tried to start in Troubleshoot mode, which loaded thunderbird in a default view format, but it did not help. 128.2.2esr is a mass!! Using Windows 11 Pro version 23H2 Downloaded and installed (updated) 128.2.1 from https://download.mozilla.org/?product=thunderbird-128.2.1esr-SSL&os=win64&lang=en-US and now it works fine.