Unable to start Thunderbird [caused by Bitdefender]
Everytime I try to start Thunderbird I get a window saying "Thunderbird had a problem and crashed". I've tried doing a clean install several times, removing my profiles and installation folder completely to no avail. Tried starting it in safe mode with the same result.
Modified by Wayne Mery
Chosen solution
Did you start Windows in safe mode? Startup crashes are often due to incompatible security/AV programs, which are bypassed in safe mode. Bitdefender is one that's caused problems recently.
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Chosen Solution
Did you start Windows in safe mode? Startup crashes are often due to incompatible security/AV programs, which are bypassed in safe mode. Bitdefender is one that's caused problems recently.
Ok, I restarted Windows in safe mode and sure enough, Thunderbird worked. I immediately uninstalled Bitdefender and installed another Virus scanner. Thunderbird is working again. Thank you.
Can confirm. The problem is caused by Bitdefender's Advanced Threat Defense module.
If you disable said module or if you add Thunderbird.exe to the exceptions the crash doesn't occur.
deimios666 said
Can confirm. The problem is caused by Bitdefender's Advanced Threat Defense module. If you disable said module or if you add Thunderbird.exe to the exceptions the crash doesn't occur.
Hi deimios666.
https://forum.bitdefender.com/index.php?/topic/81641-latest-update-breaks-thunderbird/&do=findComment&comment=293676 describes a process to submit information to the vendor, information then need to diagnose the problem.
If you can give them that information it would be very helpful.
If you still crash with Bitdefender enabled, please create a new topic https://support.mozilla.org/en-US/questions/new/thunderbird/form and put Bitdefender in the title. Thanks