Firefox Community Forum

I can't figure this out. I've been having this issue ever since I deleted my KMspico files after I did a scan using Malware Bytes (it was labelled as dangerous files or whatever so I let the app delete it).

After the restart, I can't use nor reinstall the Discord app along with being unable to download any Extensions, Themes, or Plugins for both Firefox and LibreWolf. It's frustrating as I had to go back to previous browsers, which I didn't want to do. Any help in fixing this is highly appreciated as I really want this fixed.

--- File location is C:\Program Files (x86)\LibreWolf [Same for Firefox]

--- Must I reinstall Windows in order to fix this issue or are there other ways that don't involve reinstalling Windows?

I'm on WinXP and Win7; FF is there respectively on ESR 52.6.0, and 56.0.2.

• • Pls refrain from lecturing me on updating etc. I need it to be this way for umpteen reasons. Thanks for understanding.**

First, all of a sudden all my legacy add-ons were disabled. Most of them ensure FF looks like it did ages ago, which is what I'm used to, and need, to function properly myself. They overall are no longer maintained or downloadable, hence the need to stay on lower browser versions as well.

Managed to fix that.

Then, last Fri, my webmail provider missed updating their security certificate. They seemingly later do, but I am left unable to access their website from FF on both machines, and Chrome on the XP. Disaster.

The error messages I get are, in FF:

[www.netaddress.com] uses an invalid security certificate.

The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported.

Error code: <a id="errorCode" title="SEC\\\\\\\\\\\\\\\_ERROR\\\\\\\\\\\\\\\_UNKNOWN\\\\\\\\\\\\\\\_ISSUER">SEC\_ERROR\_UNKNOWN\_ISSUER</a>

and in Chrome:

classic.netaddress.com normally uses encryption to protect your information. When Google Chrome tried to connect to classic.netaddress.com this time, the website sent back unusual and incorrect credentials. This may happen when an attacker is trying to pretend to be classic.netaddress.com, or a Wi-Fi sign-in screen has interrupted the connection. Your information is still secure because Google Chrome stopped the connection before any data was exchanged.

You cannot visit [classic.netaddress.com] right now because the website uses HSTS. Network errors and attacks are usually temporary, so this page will probably work later.

When running a SSL server test on their certificate it turned back: Chain issues Incorrect order, Contains anchor

No idea if that's relevant.

I tried just abt everything I was handed, could think of, or googled. Adding an exception included. Nothing works. Logically, the error should be on their end (w/ their old certificate, it all worked fine, now it doesn't), but somehow I keep being directed to that your root certificate having expired is the culprit.

Earlier today, I took the plunge and updated FF to 72.0.2 on the Win7 machine. (My webmail doesn't have full functionality on Chrome, so I was still very hampered in that regard there.) Now I can access the webmail -- but all my add-ons AGAIN are disabled. And what I did before to make the work does now NOT work anymore.

Can someone pls take me out of my misery? My whole existence is falling apart. I am already on 75 % (invisible) disability. Nothing works, least of all I. I am days behind on an already massively overburdened schedule. Not everyone can handle constant updates and their user interface being changed all the time. Some ppl are dependent on things looking and acting the exact same.

I'd like my add-ons back functional on the Win7 machine, and my webmail back -- INCLUDING the add-ons remaining functional, on the WinXP. Thank you.

Bonjour, L extension Video DownloadHelper, extension de Firefox ne fonctionne plus.Il ne détecte plus les videos Pouvez vous m aider ? Merci

Bonjour

Depuis 72h Video DownloadHelper ne fonctionne plus du tout sur mon PC. Il ne détecte plus aucune vidéo quelque soit le site, et même si la vidéo est en cours de lecture. Je suis pourtant titulaire d'une licence est je n'ai eu aucun souci avec auparavant.

J'ai tenté de le désinstaller et de de réinstaller sans succès

Merci pour votre aide

Isabelle B.

The other day I discovered all my extensions have been disabled. I have an old Mac and am not able to upgrade to a newer version of Firefox. Is Mozilla going to offer a solution for people like me who find their preferred browser to now be frustrating and inefficient? I would love to restore my add-ons. Thank you.

Dark Mode is blocked on https://support.mozilla.org/en-US/questions/ . You may help by either allowing add-ons to run or by providing your own dark mode.

Recently my AdBlocker extension in Firefox was disabled. At first I thought it was just a bug, but after I closed and restarted Firefox, it was still disabled, installing various other ad blocking extensions was thwarted by Firefox claiming these extensions are corrupt! I tried other approaches, including installing from github and from third party extension library; all are stopped by Firefox. I checked Firefox update, it claims that the latest version I can upgrade to is v127 (I'm using v126), so I think it's not due to Firefox not up to date. I spent a lot of time figuring these out, most pointing to Firefox banning Chinese users from using ad blocking extensions. After all these frustrations, I updated Firefox to v127, thinking updating to the latest version won't hurt, and these extensions are still disabled, installing ad blocking extension is still not successful. But somehow I checked whether I'm using the latest version, and BAM, I can now upgrade to v136. After the update, all these problems were solved. IF ONLY Firefox can provide some useful info of why my extension is now disabled, and why installing extensions are not successful, it would save me a lot of time and trouble. You dumb lazy people!