Thunderbird crashes after recent MS W10 updates. Caused by Bitdefender.
Thunderbird had never crashed before, but lately, after the last 2 Windows 10 updates within the last 2 weeks, it crashes. It's at 128.5.2esr, the next-to-last update.
It always crashes when I choose "About" and it starts downloading the update. It appears that it doesn't get the 1st byte before crashing. It will still say 0 bytes when it crashes.
It also crashes if I leave it running and the screen goes through the screen saver mode and turns black. Twice it crashed while I was using it.
I thought it might have something to do with the fact that I had 4,000 emails in my Inbox (is there a limit?), so I deleted many and moved many to folders. I now have just under 1,000 in my Inbox.
I also tried restarting in Troubleshoot Mode and updating, but it still crashed at 0 bytes downloaded.
Is there a way to manually download the update and apply it? I can't find it on the website.
The next thing I know to do is reinstall. Is there anything I can try before doing that? Would you suggest uninstall first or reinstall over what's here?
Modified by Wayne Mery
Chosen solution
This problem no longer exists, but I don't know what fixed it. I did everything suggested above, and nothing seemed to work. After I did the safe boot and returned to a normal boot, it was fixed.
But now a worse problem has appeared. After update Version 128.7.0esr 2 days ago, the message "Checking mail service capabilities..." appears, then everything stops. I have no new mail since that update. Is there possibly a connection with the previous problem?
If there's no solution, how can I undo that update?
Should I start a separate thread with this problem?
Edit: More info -- It never asks me to log in, but I can still send messages.
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Post a crash ID, a string beginning with bp-...
https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb#w_viewing-crash-reports
In the meantime, run Windows in safe mode and test TB performance.
Having just a few thousand messages in a folder is not an issue, as long as it's less than 4B.
This is the now-common Bitdefender issue:
Chosen Solution
This problem no longer exists, but I don't know what fixed it. I did everything suggested above, and nothing seemed to work. After I did the safe boot and returned to a normal boot, it was fixed.
But now a worse problem has appeared. After update Version 128.7.0esr 2 days ago, the message "Checking mail service capabilities..." appears, then everything stops. I have no new mail since that update. Is there possibly a connection with the previous problem?
If there's no solution, how can I undo that update?
Should I start a separate thread with this problem?
Edit: More info -- It never asks me to log in, but I can still send messages.
Modified by bfrg1513
Okay, disregard all the above. I decided in desperation to restart Thunderbird yet again, and this time it all works. Could a faulty router be the problem? A new one is on the way, so that's just a rhetorical question. Thanks for all the help here.
Wayne Mery said
Bitdefender updated their software
Also, you were using 32bit Thunderbird. The problem does not exist in 64bit Thunderbird.
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