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.

I've been using alt+a to open new tabs in a multi account container for a long time. Recently that shortcut stopped working possibly with the update to v148 as indicated in this reddit thread.

alt+a is not listed as a shortcut in about:keyboard or in about:addons > manage extension shortcuts or in my ubuntu shortcuts nor in any software I can think of thats running. I've disabled all add-ons except multi account containers and it still does not work. Changing the shortcut to another works fine.

Why would just that shortcut stop working? What else can I do to diagnose the problem?

The Firefox Color extension (which says "Official extension built by Mozilla.") has made it so that when I right click a link and select bookmark link, the menu for choosing which folder to place the bookmark is forced to be dark mode. Due to how few sites I use dark mode on, this sudden reversal of colors makes it hard to read. I tried changing every setting to blue but none of them seemed to effect it. I couldn't find anywhere on the extension page to ask about this without leaving a review so I found my way here. How do I fix this, and if I can't, when is it going to be fixed?

I've been extensively relying on the `Ctrl+Alt+X` shortcut to spin up the selected chatbot in the sidebar, but ever since I reset my pc (complete reset, cloud download of windows, clear all apps and files) and re-installed firefox, the keyboard shortcut isn't working for me anymore.

I installed firefox with chocolatey, upon noticing that the shortcut had stopped working, I tried to downgrade to v145, which didn't help either. So an uninstall and re-install later (this time manually downloading the installer exe), `Ctrl+Alt+X` still doesn't work. Although hovering over the chatbot's icon in the sidebar shows the shortcut in the tooltip.

More info: `choco uninstall firefox` created a backup of "Old Firefox Data" or something similar, could that have somehow persisted the malfunction across installs?

Any help would be appreciated! System: Windows 10 Pro Firefox: 146

When I put my PC to sleep, my add-ons disappear and stop showing up, and I get automatically logged out of sites I was logged into. After that, a message appeared saying that Tab Session Manager was corrupted. When I tried to repair it, all 200 or so tabs I had saved previously disappeared. How can I fix this? I’m really stuck.

Anyone use LastPass? Do YOU have any hair left? How do I put that extension up at the top. Where my red arrow points? ALSO......

Im entering the email and password i swear dozens of times every day...it never works right, ALWAYS need one or both lines filled in.  I DONT CARE IF IT DOESNT WANT ME TO SAVE THE PASSWORD. GOD KNOWS its NOT retaining it!  OK, im 75 years old. HAVE I LOST MY MARBLES?

How can I block the google account sign in dialog box on weather.com. I can't close it or get rid of it. It permanently obscures part of the screen. I use Windows 11 and the most current version of Firefox. This problem began within the last few months.

Hello, Mozilla. I really appreciate the way you think about internet access. What you stated about the app is truly reflected within it: fast connections, accurate results, and most importantly, the security. However, when it comes to advertisements, I was really expecting that whenever I watch YouTube contents, there will be no ads shown. To my surprise, ads are still there. I provided a snapshot of my desktop to give a proof about this. Is there somehow a way to get rid of them, like perhaps an extension to block ads? If there's none, that's fine as well. Thank you and high praise to the developers of this browser.

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.

Can I change the directory where Firefox stores the add-on xpi files? Our company's IT dept is constantly deleting or corrupting them. Right now it's: C:\Users\User\AppData\Roaming\Mozilla\Firefox\Profiles\riqfpq8g.default-release\extensions If I could just add a folder and tell firefox where the files are, this might solve that problem. Any ideas?

duplicate of /questions/1486143 thread

Dear Sir,

Firefox is not working with Rabby Wallet and Metamask extensions.

It does no pop-up the window to see the transaction and sign it. Firefox 134.0.1 (64-bit). Windows 10 Home.

On Metamask at least I can click on the pinned extension and see the window. However it´s not the expected behavior, because it should open the pop-up automatically. With Rabby wallet it is impossible to proceed, even clicking on the extension icon.

Please fix it asap.

Hello, I have Facebook Container installed (Windows 11) on my desktop. However, if I click a link to a FB page, say in an email or on a webpage, Facebook opens onto the current tab and makes it a container tab. Since I can not go back once FB is opened in the container tab, I have to open a new tab and go back to the original (pre FB) webpage. This is the only time this happens.

What settings can I change so that the Facebook Container opens Facebook into a new tab, not on top of an existing open tab?

Many thanks for the millions of us that are computer challenged.

When I went to https://www.mozilla.org/en-US/products/vpn/ and decided to purchase a Mozilla VPN prepaid annual subscription part of the reason was this "feature"

"Easy Firefox integration with the Mozilla VPN extension (Windows only)"

There is nothing easy when clicking on the download for the Mozilla VPN extension yields a message that the add-on or extension has been blocked. The explanatory link provided is https://support.mozilla.org/en-US/kb/add-ons-cause-issues-are-on-blocklist. That lets you know that:

"When add-ons violate Mozilla’s policies, compromise user safety or privacy, or fail to meet user expectations, Mozilla takes action. This may include disabling add-ons in Firefox to maintain a secure and reliable user experience. "

So, when will Mozilla stop violating Mozilla's policies so that the Mozilla VPN add-on is fit for use on Firefox v 149.0 [without free VPN] running on WIN10 64?

When i go to "about:memory" and do a measurement to see whats eating memory i find extensions that are nowhere to be found in the extension manager nor in the folders where the extension files are. they are: - Extension(id=wikipedia@search.mozilla.org, name="Wikipedia (en)", baseURL=moz-extension://8551 - Extension(id=webcompat@mozilla.org, name="Web Compatibility Interventions", baseURL=moz-extensi - Extension(id=screenshots@mozilla.org, name="Firefox Screenshots", baseURL=moz-extension://486 - Extension(id=pictureinpicture@mozilla.org, name="Picture-In-Picture", baseURL=moz-extension:// - Extension(id=google@search.mozilla.org, name="Google", baseURL=moz-extension://13f3307a-648b- - Extension(id=formautofill@mozilla.org, name="Form Autofill", baseURL=moz-extension://dfdf20df- - Extension(id=ddg@search.mozilla.org, name="DuckDuckGo", baseURL=moz-extension://c8eb7a13-e1ab - Extension(id=bing@search.mozilla.org, name="Bing", baseURL=moz-extension://424719d2-8ccf-4c8e- - Extension(id=addons-search-detection@mozilla.com, name="Add-ons Search Detection", baseURL=moz- (the names are cut thats how it shows and at the end there is a "..." i cant select) I tried looking everywhere and i cant find where are this extensions to delete them. i use the google website to do searches so dont need an extension, i dont use duckduckgo at all, i dont use bing at all, i dont use the screenshot feature, i dont use the picture in picture thing and also i use the wbesite if i want to go to wikipedia. I would like to know how to erase them entirely since i dont use them and they are eating memory.

I did reach out to GitHub. They referred me to contact the Video downloader support team, which is not part of their development.

Your response Number 2 If you are referring to this Extension https://addons.mozilla.org/firefox/addon/video-downloadhelper/ Look on the left side for the Support site link in the more information panel. It leads to https://github.com/aclap-dev/video-downloadhelper/discussions

My question is addressed once again, "Third attempt?" Please give a direct reply. Firefox should have the contact information since you permitted it to be part of your browser extension.

Back to my original question posted here once again Recently, the video downloader helper stopped working with videos of YouTube links. The video downloader helper on the Firefox window is grey, meaning inactive. I tried using a video from a LinkedIn web page and was able to download it. Any suggestion? I recently purchased the license for a video downloader helper. Thanks Arvind [edited email from community support forum]

I cannot get access to the Toolbar to make the Evernote Web Clipper appear even though it is listed in to Add ons Manager I don't have this problem on my other, WIndows 10, computer. Is this a known problem with WIndows 11?