How to Fix Disabled Add-ons in Firefox May 2019

**Update** Upgrading to the latest version of Firefox, may fix the issue, so try that before anything else. Go to Help - About Firefox. Latest is 66.0.4 at this time** Over the weekend Mozilla had a certificate expire which caused virtually all add ons (extensions) to break. This essentially made the browser unusable for most as Firefox's main attraction is it's higher level of customization than any other browser. I like Firefox because it's the only browser currently support Encrypted SNI and in addition you can customize many higher level security settings that no other browsers let you touch. For this reason alone, I don't want to switch to another browser. (Also I've been using it since it came out). So I really wanted to find a fix for this. Mozilla rolled out a fix, but required you to "enable studies" which I don't like because it seems like more data collection to me. The fix is available as a standalone installer without having to "enable studies" in the security settings. Link below:

storage.googleapis.com/moz-fx-normandy-prod-add…

See the pinned blogpost if you're still having trouble, I've added some additional information there not covered in the video.