Firefox Community Forum

Tried four times in a row. Had the problem In 142.01. Updated to 143.01. No help.

First image is after the update attempt. I intentionally chose not to update 3 of them

Second image after relaunch.

I recently wiped & reloaded my computer. Multi-Account containers re-installed successfully & I see all my containers. The issue is with sign-in to Reddit.com website. If I try to login using a container, I get invalid username or password error. If I login without using a container, it's fine. I am copy/pasting my account info. I tried different containers; same issue. Tried creating a new container; same issue. Try again without using a container; login to Reddit is successful.

Hey folks, just wondering when the Windscribe add‑on will be moved to the MV3 framework. Other browsers already have it at v4.x and I’d love to see Firefox catch up so we can use the new privacy features. Is there an ETA on the review/approval process? TIA

The add-on, Enhancer for YouTube, appears to be the cause of a very annoying bit of behavior. My YouTube tabs seem to be all numbered. I hate this. Why make a bookmark, I have to manually remove this number before I can auto sort my bookmarks directory alphabetically.

Worse, there is no part of the description that identifies this bad behavior as being involved with Enhancer for YouTube. I had to go to AI for help figuring out how to get rid of this exceedingly annoying behavior that showed up whenever I used tabs with YouTube videos. I can't imagine anything that this add-on could be adding to my experience that is more convenient than this particular behavior is annoying.

Changes to the appearance of tabs should not be performed invisibly and without settings that I can disable. Because of this, I can only get rid of his horrible behavior by disabling the entire add in. Mozilla put a stamp of approval on this particular add-in. So the dirt is on your face, too.

I have a issue with a browser add-on There is a triangle icon with Len dau English: triangle icon - Go to Top I can not find any way to remove or I have know Idea how it was installed

Any help please

After having upgraded my W11 system to 25H2, I cannot install any extension. Installation terminates with "... something may be broken". I'm using FF 144.0,2. FF is used in more than one account alternatively.

On a second system, with less security measures, I have no problems.

Hi everyone,

I recently built a small Firefox extension for my website https://calcolo-stpendionetto.it https://calcolo-stpendionetto.it , which helps users calculate their net salary in Italy using updated IRPEF and INPS rates.

However, when I try to upload the extension to addons.mozilla.org addons.mozilla.org (AMO), I keep getting this error message: Signing is not possible due to an error with the manifest file

{

 "manifest_version": 2,
 "name": "Calcolo Stipendio Netto",
 "version": "1.0",
 "description": "Calculate your Italian net salary (IRPEF, INPS, regional tax) quickly.",
 "icons": {
   "48": "icons/icon48.png",
   "128": "icons/icon128.png"
 },
 "browser_action": {
   "default_popup": "popup.html"
 },
 "permissions": ["activeTab"]

} I also tried switching to manifest_version 3, but then Firefox gave a warning that some properties like browser_action are deprecated or not recognized.

Has anyone experienced the same issue when uploading finance or calculator-related extensions? Is there a new manifest format or signing rule I might be missing for Firefox extensions?

Any help or examples from working extensions would be greatly appreciated. Marien Klin

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 am having a problem with Firefox. Some websites do not load correctly and certain extensions do not work as expected.

I have already tried restarting Firefox and checking my internet connection, but the issue still happens.

Please advise how to fix this problem. Thank you.

Is anyone monitoring this community? Has it been abandoned?

I've been having an ongoing problem. I fixed it myself, because after posting here, I had zero responses and didn't know what to do, so I messed around and tried things on my own, which seemed to fix it. But apparently, it is not fixed, and I still don't know what to do. A Firefox expert I am not.

Very simply, I use two different computers, each 2000+ miles apart. Each time, and this has worked for well over 3 years now, the entire computer is copied to a backup. The backup data is restored, the current Firefox profile, as well as the Firefox program. To repeat, this has worked for well over 3 years now.

In order to get the extensions working, that requires disabling and then reenabling each one. (Otherwise, Firefox will not access the internet.)

This time, the extensions were disabled and enabled, and everything appeared to be working fine, but nope, not a single extension works. Even choosing a different extension that is normally disabled doesn't work.

I used to use Adaware, which is on the disabled list, so I disabled the non-working Ublock Origin and enabled Adaware, and it doesn't do anything. The ads roam freely all over the page. They pop up and dance around.

Not one extension will work. New, old, enabled, disabled, whatever. Nothing.

Does it bear repeating that I am not a Firefox expert? Without an answer from someone who knows what they're doing, I may as well switch to crap, inferior Edge with the zillions of dancing, pop-up ads. And I hate Edge.

I'm begging for an expert to help here.

Hello everyone,

Is there any software that allows software developers to see what the CSS they are creating is doing in real time ?

Because I can't imagine they're doing it blindly. I see some CSS files that have hundreds, possibly thousands, of lines.

If there is software that helps them see immediately what their CSS is doing, can it be used to create extensions (add-ons) for Firefox ?

Thank you for your attention.

I just read a PC World article concerning extensions containing malware. AdBlock was listed and I've been using the extension for some time. Are you aware of this issue? Is the extension available viz Firefox setting/extensions in question. Should I remove it?