Not sure what would be causing a connection failure. I just verified that the link is still up for me, and obviously you have an internet connection if you're replying to me.
You're not behind a firewall that might be blocking it are you? E.g. being in China?
Hey doop, replying to you here since your post is showing up as dead so I can't reply to it.
If you installed the xpi you shouldn't need to do anything in the browser console, and your addons should have come back. Obviously the latter didn't happen.
Chances are a connection failure in the browser console is unrelated, the browser console is basically constantly spewing error messages, you should just ignore them unless they are in response to something you did.
All I can really suggest over the internet is to try reinstalling your addons - that might work - in which case I would assume they just got uninstalled somehow. If it doesn't I'm not sure what to suggest, and I can't realistically debug something too complex over HN comments. You might just have to wait for mozilla to publish an update to the browser that fixes this properly.
I do want to emphasize that I'm just some dude on the internet being helpful by the way, not associated with Mozilla or anything.
Edit: Just saw this error message you also posted: """WebExtensions: failed to add new intermediate certificate:"""
That sounds like an issue that happened when installing the .xpi? Did it give any other related debugging information?
FF shows the fix add-on as being installed with the standard pop-up notifications in the menu bar. However, in the browser console, I only see the error msgs that I've listed in my other posts.
I click the link. I click "Add", and Mozilla says addon could not be downloaded due to connection failure. Nothing appears in browser console.
Downloading an addon gives me "Download failed. Please check your connection." on the Addons site. In console, I get:
Events to handle the installation initialized. BigInteger.js:27
[GA: OFF] sendEvent {"hitType":"event","eventCategory":"AMO Addon Installs Download Failed","eventAction":"addon","eventLabel":"uBlock Origin"} BigInteger.js:27
Error:
In the studies, I have https://i.imgur.com/fqrd5Jo.png. I enabled it, and have tried setting both first run, and the update interval is set to 21 (to try and force it to update it quickly).
OK, so... I right clicked, saved-as and then ran the XPI... and that worked. So thank you for that suggestion.
As for the studies image, that's only half of the fix according to the blog post [1], mine is only verification-timestamp, not signing-intermediate-bug.