Thunderbird has become crazy slow.
Thunderbird has become crazy slow. 5-10 minutes to display an email. It's not my email server because my phone connects to and displays email fast. I have been through all the advice that I can find and cleared, checked, disabled everything that might slow it down. Still crazy slow. If I kill it and restart, I get about 3-4 minutes of reasonable performance and then it just stops. Latest Release Version V147.0.1.
i have a fast machine with 32Gb memory only 60% used, everything else runs fast
I don't want to junk Thunderbird, but it's unusable.
Help!
All Replies (6)
Bitdefender and I have made Thunderbird.exe and the Thunderbird folder exclusions, but it has made no apparent difference.
What is weird is that if I kill the process and then restart, it behaves almost normally for a few clicks and then typically goes into forever mode with "Loading message..." as the most common state, then nothing else works until it finally comes back (if it ever does).
Diubah oleh martin.anderson
Try to start Windows 11 in safe mode with networking enabled.
Does the problem go away?
Windows safe mode disables anti-virus software. This is a troubleshooting step, not a solution.
I have made Thunderbird.exe and the Thunderbird folder exclusions, but it has made no apparent difference.
There is no point creating an exception for the program folder. You should create an exception for the Thunderbird profile though. https://support.mozilla.org/en-US/kb/profiles-where-thunderbird-stores-user-data#w_how-to-find-your-profile
Actually it was the Profile folder I meant. I have my actual email files in a different folder and have excluded that too. No difference. I have turned off all AV checking - no difference. I get about 3 minutes after a restart when it works fine - then it goes silly. Just for background, I have used Thunderbird for over 10 years with zero problems and good performance. Something has changed dramatically. Maybe I should just try going back to an older version. This one seems completely screwed.
Some other things to try:
If using Gmail, see https://support.google.com/mail/answer/7126229 'My email client is crashing, or emails are taking too long to download' section.
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Disable the Accessibility Service:
- go to TB menu > Settings > General
- scroll all the way down and click the 'Config editor' button on the right
- click 'Accept the risk and continue' if that appears
- search for accessibility.force_disabled > change the value to 1
- click the check mark after making the change > restart TB
Note: this will disable accessibility features such as screen readers.
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Clear the cache:
- press Ctrl-Shift-Delete (Mac: Cmd-Shift-Delete)
- set 'Time range...' to 'Everything'
- untick all items except 'Cache'
- clear > restart TB
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Compact folders (this may take a while):
- TB menu bar > File > Compact Folders
(If you don't see the menu bar on top, press the ALT key.)
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See [Thunderbird:Testing:Antivirus_Related_Performance_Issues](https://wiki.mozilla.org/Thunderbird:Testing:Antivirus_Related_Performance_Issues)
See [Thunderbird:Testing:Memory Usage Problems](https://wiki.mozilla.org/Thunderbird:Testing:Memory_Usage_Problems)
Run a [Performance profile](https://support.mozilla.org/en-US/kb/profiling-thunderbird-performance)
I have turned off all AV checking - no difference.
Did you try Windows safe mode as suggested?
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