Firefox Community Forum

Hello!

I first installed Video Download Helper several weeks ago and it worked fine. However, since the update of 04 March, 2026, it no longer works with YouTube. (It does, however, still work with Instagram.) Having checked all of the settings (which I had/have not changed), I uninstalled it today and then re-installed it. This hasn't helped. With YouTube, the Downloader icon (pinned to toolbar) simply remains grey and does not show any videos when opened. I am using the latest, fully updated version of Firefox with Windows 10.

Can anyone help, please?

Many thanks,

Stuart.

Why has Video Download Helper v9 by Michel Guteriezze been replaced by Video Download Helper by vdh? The original versions were perfect. The VDH version 10 vdh is straight junk!

EVERY SINGLE TIME I try to access the 1Password extension it requires me to enter the Master Password for my 1Password extension. It never did before, if I entered it once I could use finger print access for a few day before it asks for my Master Password again. Do I have to remove the extension?

When I first install an extension, there is an option to pin that extension icon to the Firefox taskbar. But if I later unpin it, then I can never repin it back to the taskbar. In older editions of Firefox, long ago, there were ships wheel icons next to the extensions in the extension list. There was choice to "pin to the taskbar", but now there are no ship's wheel icons in the list. And therefore no way to repin the extension to the taskbar. Therefore, once I unpin an extension icon from the taskbar, I have no way to pin it back up there.

the last update disabled my group speed dial that had hundreds of saved research bookmarks. How do I go back to the previous version and restore my group speed dial bookmarks? The update should have warned that this extension would be disabled. This is a disaster!

I can no longer pin extensions/add-ons to the toolbar. My interface does not look like the one in the help section. I don't see a gear, I see three dots. And when I click on the three dots I don't have the option to pin to toolbar.

I am using Firefox 147.0.4 on Mac OS 26.3 Tahoe.

I have installed to Firefox Extension - the latest version - and have paid $19.99 for the lifetime version with updates ... (may have been 1 year - not sure) - however, the sidebar will not recognize any of the YouTube Videos for download.

Please advise!

Dr. Mark Redd [edited emails from community support forum]

Thank you!

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.

Hi there,

I’m using the Firefox Multi-Account Containers extension and would like to remove a site that’s been set to "Always open in [X] container." However, I don’t see a “Manage Site List” option anywhere in the container settings as seen here: https://support.mozilla.org/en-US/kb/containers

Here’s what I’ve tried so far:

   I’ve clicked the Containers icon and selected the gear ⚙ to edit a container.

   I enabled privacy.userContext.siteAssignments.enabled in about:config and set it to true.

   I restarted Firefox (with session restore on), but still no option appears to view or manage assigned sites.

I’m on Firefox Desktop (Mac), and I’ve confirmed that I’m using the official Multi-Account Containers extension.

Is this a bug, a UI change, or something I’m missing? I’d really prefer not to manually edit the containers.json file if there’s a built-in way to manage these assignments.

Thanks so much for any guidance!

Hello again I wrote to you yesterday and I explained that I'm almost blind anyway you applied very quickly and you suggested I open up extensions and then right click on the appropriate extension and I would see a list among which I would be told how to pin it to clipboard or pin it to toolbox I'm sorry pin it to toolbar but however I opened the list and it was suggesting how to save the page how to open it the second page all sorts of other things but never once did I see anything about pinning it to a toolbar i'm sorry i wrote earlier today and try to include a picture of what I was seeing but unfortunately it wasn't the correct format in the brief the e-mail was returned so I'm still stuck with the same problem I have no idea how to see my extensions none of them are showing hope you understand I know I go on a bit but I'm writing this with dictation anyway thank you again David Shaw

Recently, LastPass has been sending me messages that it's no longer supporting browsing through Firefox. Is there a new extension I can add? The notes suggest switching to Safari, but I prefer Firefox. What is the reality here? Do I really need to switch or give up LastPass. I value both and don't want to have to quit either. Thanks!