I downloaded the update Thunderbird 153.0.2esr (32-bit) earlier today and all it does is freeze up and lock. What is wrong?

Still not working. It has crashed several times. Messages will not open.

Freezes immediately during startup?

Do you get the crash reporter? If you do, please post your crash IDs here. See https://support.mozilla.org/en-US/kb/mozilla-crash-reporter-tb#w_when-thunderbird-crashes

Sometimes yes, other times I get my inbox and then everything freezes, no messages will open, then sometimes it crashes.

Crash Reports submitted: bp-fdf3a10b-7834-4a91-9338-2ed260260807 8/7/2026, 1:21 PM bp-7696eca4-8e76-4bef-a917-b7bc90260807 8/7/2026, 1:20 AM bp-00eaca8c-2798-4179-8a4e-5be0e0260807 8/6/2026, 11:14 PM bp-1f506917-4254-44bd-954b-ff7a60260807 8/6/2026, 10:23 PM bp-7b90be44-5728-4b67-bd0e-89f930260806 8/6/2026, 7:45 PM

Thanks for that detail. All of those crashes are @ OOM | small, which tend to be corrupt mail folder. But let's check first, does the problem go away if you do Help > Troubleshoot Mode? (don't permanently disable anything)

No. Exactly the same.