After doing that, try to start the application again. Thunderbird won’t start already running – If you’re getting this error message, be sure to open Task Manager and close all Thunderbird instances.

Thunderbird won’t start/ missing profile in Safe Mode – These Thunderbird issues can appear on any version of Windows, but even if you don’t use Windows 10, you should know that most of our solutions can be applied to both Windows 8.1 and 7.This can be due to your Thunderbird profile, but you can fix that by deleting parent.lock file. Thunderbird not responding – Many users reported that Thunderbird isn’t responding at all.Speaking of Thunderbird, here are some similar issues reported by users:

What can I do if Mozilla Thunderbird won’t open in Windows?Īlthough a solid email client, many users reported that Thunderbird won’t open on their PC. For this purpose, we prepared a simple but useful workaround that should help you resolve it. One is critical and it’s related to sudden crashes after startup. However, even though this email client is frequently updated and well-coded, users are experiencing a number of issues with the software. And the best part? It’s an open-source project. Mozilla Thunderbird is one of the most trusted email clients on the market available on various platforms used not only as an email client but also as an RSS feed and much more.

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Thunderbird 64 bit for windows 10