Can you try the Troubleshoot Mode Thunderbird to see if the issue is still there?

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

FWIW, troubleshoot mode is definitely is one of the standard tools to try, but unlike Firefox I find that troubleshoot mode rarely resolves hangs or crashes for Thunderbird. An exception is some antivirus software add things to Thunderbird, which you would typically see in Tools > Add-ons > Extensions.

Thanks for help.

I tried Troubleshoot Mode Thunderbird. This did not work. TB froze again.

Regarding starting Windows in safe mode, I am using Windows 11, not Windows 10. It is only since the upgrade to Windows 11 that the TB failures occur.

I believe the safe mode link I provided is also good for Windows 11.

Wayne,

Thanks for further advice. I had a look at the Windows safe mode page you suggested. However, this looks a bit beyond my technical level. I'm thinking that I'd be safer to use webmail on IONOS instead of TB for the time being in hopes that TB will resolve the issue in the next update. To help me decide what to do, it would be interesting to know whether other users have the same problem. It seems unlikely that I'd be the only one.

Chris

If you can't run Windows in safe mode, and your antivirus is not Windows Security, remove (not disable) your current antivirus, at least temporarily, and see if there's a difference.

It's been too long time since I read those instructions - Microsoft makes it look daunting because they list so many choices. But it's really not that challenging in a simplified form:

1. hold the shift key during power on, or in Settings select System > Recovery > next to Advanced startup, select Restart now

2. Once booted, in the Startup Settings screen pick Safe Mode with Networking

Also, you may find the instructions easier to follow if you print them.

Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1972457

Possible solution: https://support.mozilla.org/en-US/questions/1514833

Chris, you are not the only one.

I tried "System > Recovery > next to Advanced startup, select Restart now" but that produced a screen with options to go to Windows 11 or restart or something else. But I had no way of selecting an option as the mouse was inoperable.

I think I'll quit trying stuff I don't understand and go back to using webmail to compose emails. TB is ok for receiving emails and maintaining a filing system, but it freezes when composing anything other than very short messages.

I'll just hope the bug is sorted out soon and an upgrade is on the way.

Chris Sackett

I should have added that the only antivirus I have is whatever comes with Windows 11. No other proprietary versions.