This isn't quite the bug report I wanted to wake up to:

All Firefox extensions disabled due to expiration of intermediate signing cert on 2019-05-04:

@fribbledom Yeah, I saw this, and really want to install a vertical tab extension, but I can't

I've tried a few of the workarounds but they don't seem to work ...



You can open "about:config" and set "xpinstall.signatures.required" to false.

Just don't forget to re-enable it once the fix is out.

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@fribbledom I tried that, but it didn't work - do I need to do anything else?


Maybe restart Firefox. I must admit I haven't tried it myself so far. I kinda don't dare to restart my browser right now, since I badly depend on a few extensions 😆


Oh, so you still got a running instance and just wanted to install a new addon right now?

Tough situation, really. I probably wouldn't risk it.

@fribbledom @hugo Oh, so you're OK if you don't restart? And here's me due for my fortnightly freeze of my Macbook...

@hugo @fribbledom Oh, thank you! Means I only have to face restore tabs requiring me to do about a dozen 2FA logins. My fault for embracing security, eh?

@grumpysmiffy @fribbledom I managed to load a plugin by right-clicking the "Add to Firefox" button and downloading the plugin directly, then using "load temporary addon" via about:debugging

@hugo @fribbledom OK, so what we're looking at is a fuck-up that can be worked around, rather than the end of the world. That's a bit more comforting.

@hugo @fribbledom Uh-oh. Desktop had "One or more installed add-ons cannot be verified and have been disabled" when I sat down this morning. Just come up on my laptop, too. Like they haven't fixed it yet?


They released a fix via the Firefox Studies feature, which you can enable (and then disable again) in your Privacy Settings.


@fribbledom @hugo if i understand this only works on beta and nightly versions
@fribbledom @hugo I've heard you may need the Developer version or the Nightly version of Firefox in order for that to work

@Frinkeldoodle @fribbledom @hugo apparently the Linux version also has this enabled, no nightly needed.

@Frinkeldoodle @fribbledom @hugo No, that works in every firefox version.

The biggest disadvantage is though, that you have to do it with each one individually and have to do it on every firefox start

@fribbledom @hugo According to this: xpinstall.signatures.required works on Android but not on “proper” Firefox.

@artik @hugo @fribbledom Seems to work on 66.0.3 on Ubuntu. The gesturefy plugin wasn't working, set that, restarted and now it's working.

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