Thunderbird had never crashed before, but lately, after the last 2 Windows 10 updates within the last 2 weeks, it crashes. It's at 128.5.2esr, the next-to-last update. It always crashes when I choose "About" and it starts downloading the update. It appears that it doesn't get the 1st byte before crashing. It will still say 0 bytes when it crashes. It also crashes if I leave it running and the screen goes through the screen saver mode and turns black. Twice it crashed while I was using it. I thought it might have something to do with the fact that I had 4,000 emails in my Inbox (is there a limit?), so I deleted many and moved many to folders. I now have just under 1,000 in my Inbox. I also tried restarting in Troubleshoot Mode and updating, but it still crashed at 0 bytes downloaded. Is there a way to manually download the update and apply it? I can't find it on the website. The next thing I know to do is reinstall. Is there anything I can try before doing that? Would you suggest uninstall first or reinstall over what's here?