The solution is to download the new edition and restart your browser, and you SHOULD be good. You shouldn't uninstall your add-ins/extensions. Personally, I have a feeling that this update isn't an absolute fix and we're going to have another Firefox update later this week. Just a hunch. But this should get most of your extensions back up and running. I was fortunate in that it only disabled one of mine, and it was a pretty trivial one.
The problem was that they let a security certificate expire, which caused a bunch of extensions to become unsigned and forced them to stop working. Certificates can be quite fiddly to work with, and chaos ensued. We'll see how well their fix worked. They worked hard to get it out before the business week started, so we shall see.
https://www.cnet.com/news/firefox-fix-restores-broken-browser-extensions-but-not-everyone/
The problem was that they let a security certificate expire, which caused a bunch of extensions to become unsigned and forced them to stop working. Certificates can be quite fiddly to work with, and chaos ensued. We'll see how well their fix worked. They worked hard to get it out before the business week started, so we shall see.
https://www.cnet.com/news/firefox-fix-restores-broken-browser-extensions-but-not-everyone/