Thunderbird stops responding
I have been using Thunderbird for years with no problems. However recently, Thunderbird very often simply stops responding. Sometimes it just hangs up and sometimes the program bar at the top displays "Mozilla Thunderbird (Not Responding)". If I try to wait for it to respond, it literally hangs for several minutes before it begins to respond again, and often, it simply never starts responding again. It has simply gotten to the point where Thunderbird is practically unusable. All my other application software continues to work with no problems. It's just Thumderbird.
The version number in this submission may not be correct. I can't provide the real version number because of the hangups.
Any suggestions?
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Odabrano rješenje
What is your operating system? What is your Anti-virus, if any?
An easy test to make is to restart Thunderbird in Troubleshoot Mode (see Help | Troubleshoot Mode). This will temporarily disable all add-ons, in case one of them is misbehaving. Does that help?
The most common cause of this type of problem is the Anti-Virus grabbing hold of the mail folder files and not letting go. Assuming Windows, you can restart the computer in Safe Mode with Networking. This will temporarily disable the AV. If you run Thunderbird now, does it work normally? If so, the AV is your culprit and you need to exclude your Thunderbird Profile from scanning.
Another thing to try is to disable hardware acceleration, which can conflict with some display drivers. To do that, go to <Settings | General>, scroll to the bottom and uncheck the " Use hardware acceleration when available" box.
I have also seen slowdowns, though rarely complete freezes like you describe, when the message indexing has become corrupt. To fix this, go to <Help | Troubleshooting Information>, scroll down to Profile Folder and click Open Folder. NOW EXIT THUNDERBIRD! You will find a very large file called "global-messages-db.sqlite" - you can safely delete this file and it will be rebuilt when you next start Thunderbird. Be aware that the file can take several hours to rebuild, but you can use Thunderbird while that is happening.
Does that help?
Lin,
Thank you very much for your response. This was a very frustrating situation for me and I'm still not sure what actually caused it. But I'm sure that at least part of your suggestions materially contributed to my resolving the issue. I think the solution was a combination of excluding Thunderbird from Defender's scans and deleting Thunderbird and doing a clean re-install. But whatever it was, I'm back to having a reliable email application.
Best, Alan
For the past year or so my Thunderbird has been really laggy, can't keep up with even typing at times, window just locks up for 10 seconds or so. Gray window when changing views, just awful. A week or so ago I started up a copy of thunderbird portable apps and started experiencing the same exact thing with a completely new config and different email accounts on another computer so now I knew it couldn't be anything I was doing wrong. Found a bunch of old advice about AV scanning whitelist data folder etc that didn't help.
Last week I found some really old advice talking about disabling hardware acceleration (settings/general) and that was a HUGE improvement. That setting fixed both of my problem Thunderbird installs.
I don't know what hardware acceleration a Ultra 7 155H is lacking but thunderbird with its default settings hated it. Other computer was a VM on the same host.
I recently encountered a huge lag in response of any kind after years of using Thunderbird which I absolutely adore. After reading alot of suggestions on how to speed things back up to normal I tried the following: I first cleaned the pins of my memory modules ( I have an asus I5 running windows 10 - oldie but goodie) and that helped with overall machine response yet Thunderbird still was so agonizingly slow. I then provided an exception to windows defender settings ( a proposed solution found on the internet) excepting the profiles folder which for me has 3 accounts. (I just plugged in the entire path to the folder) It worked like a charm. Responsive and speedy - what caused the slowdown after all these years - I don't know, am I incurring a security risk by limiting windows defender - I don't know - I do know that I don't want to spend a ton of time looking for a solution - this is working - I don't know about other anti virus programs as I do not have any of them - just passing this along - hope it works for you too - why we need to find these solutions is beyond me. peace
Cartaphilus08 said
Lin, Thank you very much for your response. This was a very frustrating situation for me and I'm still not sure what actually caused it. But I'm sure that at least part of your suggestions materially contributed to my resolving the issue. I think the solution was a combination of excluding Thunderbird from Defender's scans and deleting Thunderbird and doing a clean re-install. But whatever it was, I'm back to having a reliable email application. Best, Alan
Now that you have excluded TB from Defender's scans, make sure you go to TB menu > Settings > Privacy & Security > Security > Antivirus > Allow antivirus clients to quarantine individual incoming messages is enabled.
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