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after the recent update I could no longer 'like' articles or comments on substack, and I couldn't post comments, either. looks as though there was a fix the next day, because I was again able to 'like' and comment...but then late that night I was suddenly back to square one. exactly the same issue. it's now been a couple of days and I still can't 'like' or comment on substack.

this same thing happened after an update many months ago, and after a week or two I just switched to opera. checked firefox again in september or october and it was working so I stayed. I'd like to keep using firefox but the substack problem is annoying. why did it work for about eight hours and then stop again? it seems as though substack is the poor step-child. hope you can get this fixed! because having to change browsers is also annoying...

thanks!

In my Firefox browser, when i try to sign in to Youtube, a window says "there was an issue signing in to Youtube" pops up. None of the troubleshooting articles are helpful for my situation. My Firefox browser is up to the latest update - version 146 on windows 11. Youtube works, but i am prevented from signing in to my account.

I have used Youtube in Firefox before by signing in to my google account, the only thing that has changed was that I went into settings and cleared my browsing history, cache, and cookies. Once those were cleared, Youtube won't sign me in and only shows that error window.

In my Firefox browser settings, I have set Youtube to accept cookies and have disabled adblock for Youtube.

My Youtube account is still accessible using Chrome, but not in Firefox. Youtube WILL sign me in if i use Firefox private browsing. I'd rather not use chrome since Firefox is my primary browser and I'd rather not jump through the extra steps of google sign-in using private browsing.

I do have a Google account with my school institution, but that has never been an issue (expect it won't open google maps for some reason, not the issue here though). My Youtube has always been signed in with my personal Gmail, not my school Gmail. I'm not sure if that's interfering with anything.

To reinstate the main issue: I cleared my browsing data and cookies, now Youtube in Firefox won't sign me in.

Hello,

I work for a company that integrates with Netsuite via SSO. Users should not be required to reenter their credentials to access the integrated app via a NetSuite subtab. However, this has been an ongoing issue. I thought it had something to do with cookies, but I cannot figure out what is causing this. Here's what happens: A user logs in to Netsuite, looks up a posted document, and clicks on the subtab of the integrated application. They are then prompted to enter their credentials. This prompt keeps repeating whenever the user refreshes a page or opens a tab. It seems like the browser is not retaining or saving the user's credentials. This does not happen to Chrome or Edge users. Is there anything you can do?

Your assistance is greatly appreciated.

Regards, Mac

The last time Firefox updated my Etsy Dashboard would no longer connect. None of the screens I need for my shop would work. Etsy support had me clear my cache and I even did a refresh of Firefox but it still would not work. Etsy's conclusion was it had to be a Firefox issue and they could not help. I had to switch to Chrome to continue working. At some point the issue went away and Etsy's dashboard was working again. Now, after the most recent update it immediately was no longer working again and I am forced to use a different browser. What could be causing this issue related to the updates?

When I try to log into Xfinity to pay my bill I get this. Is it related to Firefox? Thought I'd ask you before I tried to work my way to a human at Xfinity

Access Denied You don't have permission to access "http://login.xfinity.com/login" on this server. Reference #18.42d3e17.1765483636.94808bfd https://errors.edgesuite.net/18.42d3e17.1765483636.94808bfd

This happened December 11, 2025

Recently upgraded to version 146.0 on Linux (Mint, Cinnamon)

YouTube will work fine when I first start the browser. Eventually videos will stop displaying and sidebar links will not be active.

From a separate forum article I cleared all site data and restarted Firefox. That fixes the problem for about 4 or 5 videos, then you need to rinse/repeat.

The latest incident seems to have been triggered when I tried to watch a video embedded in an X (Twitter) post. That failed. And the YT failed as a whole. X was open in a separate tab container at the time.

While I have both Privacy Badger and uBlock Origin installed, both are deactivated for YouTube.

See the attached images. The video is just not displaying, though the screen is reserving space for the player.

Both/all videos I have tested do work in Chromium.

I sent message below to Bluesky support and have tried all their suggestions (all relating to Firefox), but to no avail.

MacBook Pro OS 10.14.6. Yesterday (9Dec2025) I could open Bluesky & see my profile but could not add a new post. I then did an ‘age verification’ and received confirming emails. When pressing ‘New Post’ button just went to blank page. Under ‘notifications’ at the top, was a message “''''! r.countGraphemes is not a function''''”. I am accessing using ‘Firefox 115.31.0esr (64-bit)’. I have deleted caches, re-started ‘Firefox’ and re-signed into Bluesky, but problem persists.

Could you please advise how I can overcome this problem. Thank you, best regards.

I was having problems with the firefox browser. This has never happened. I always use firefox and the company said that firefox was compatible to there sight but I could not access.

We have a web page we've created that is linked to by multiple other websites. For two of the sites where this is linked, Firefox (only) gives a "The Page Isn't Redirecting Properly" error. Using the exact same URL to link from other sites works fine in all browsers. Once you get the error, if you click in the URL and hit enter, the page will load fine. Any ideas? When searching that error, all the ideas I find tend to focus on the individual user's system, but this is happening for all users.

Mozilla needs to come up with a permanent solution to this issue. I know that Google probably started it by somehow changing YouTube, but Mozilla needs to react and come up with a solution.

Good day,

when I click in Instagram in the notifications on a comment, I get redirected to to the comment section, but not to that certain comment, so I would have to scroll a lot.

Please help with that.

Thanks a lot!

I will contact Instagram about that now too, as maybe the issue is on their side, or on your side.

Regards from Germany, Johannes

I have been having trouble entering information or accessing certain websites. This has been getting worse regularly. Either I can't sign in, using manual or saved information in my password keeper, or I can't enter information on sites on which I'm trying to make a donation, such as my address. Or it will do that and then not let me enter credit card information, again either automatically or manually.

Note that I then have to open a different browser, and then I have absolutely no trouble. If these problems aren't fixed, I will have to stop using Firefox as my default browser, which it has been since its beginning. Please advise.

I'm running FF on Windows v145.0.1 and navigate to...

    https://www.star.nesdis.noaa.gov/goes/conus_band.php?sat=G18&band=GEOCOLOR&length=24

...and the animation doesn't work. This is a recent phenomenon. I have another computer in the office I've turned off FF updates (obvious reasons) and the animation works fine. It worked on my computer until recently. I'm so exhausted with FF updates that break things, it's getting as bad as Windows. I've run FF in troubleshoot mode, no good. I've added this primary domain to exceptions to enhanced tracking, no good. Nothing works so I assume it's Firefox (may not be). But v129.0.2 works fine, in this respect (streaming the animation loops of GOES West).

Does anyone know what configuration or setting I can explore to make this work again?  :-(

Thanks,

I have no idea what Firefox did with the update but it made navigating my Substack a royal pain in the neck. I cannot post, cannot edit, cannot share posts. Very infuriating. I have had to go back to Edge to get these features to work. Dashboard link does not work. Share link does not work. Cannot post comments. Infuriating.

Hello my FFox is up to date on a new Samsung A07. TF1+ pop up says they can't play their video in my navigator (FF). Have I put on too much security? Cookies for site accepted, No adblockers. Please advise, thanks