Thunderbird crash report right after start

Question

I have a problem with Thunderbird from some days. When I try to start it, it crash right after start and only I see window for "Crash reporting tool" from Thunderbird. I don;'t know what happened. i try:

1. Reinstall Thunderbird (using Geek Uninstaller and manual delete profiles etc)
2. Delete profiles and then try to start Thunderbird
3. Create new profile wit "-p" parametr and open that way

Any of above method don't work - I always see crash reporting tool. I also try to open portable version and that version start. I think that happened after some Windows Update (os Windows 10), but when I looked at installed updates it's only for Office and NET framework.

Any ideas what else can I do?

Answer 1

First, thoroughly clean up remnants of Thunderbird:

• Save your old profile to another folder.
• Completely remove Thunderbird using Programs and Features.
• Remove any remaining data from Thunderbird (e.g. C:\Program Files (x86)\Mozilla Thunderbird) and data (C:\ProgramData\Mozilla, C:\Users\Bart\AppData\Local\Thunderbird,C:\Users\Bart\AppData\LocalLow\Mozilla, and C:\Users\Bart\AppData\Roaming\Thunderbird).
• Open Regedit, search for any data containing Thunderbird, and delete the key (using due care!).

Now try reinstalling 32-bit Thunderbird (the default).

If everything works, you can now switch some of the new files with those from your old profile to avoid reentering account information, view, etc. Keep those new profile files, in case something is borked in the old batch.