Firefox Community Forum

Since changing to a new internet service provider, I can no longer print form Firefox. My internet router uses the same username as password as my previous router.

Hi, I'm running Sierra 10.12.6 on a mid-2011 iMac. I installed Firefox 115.33.0 in March '26, but now see a "not supported message" in the browser.

I downloaded the ESR version of this browser, but when I went to copy to the APPS folder it asks if I want to replace the NEWER one that's already there. ???

Now it says I'm running it on the ESR update channel. Did I just go backwards in browsers? When this ESR expires, if a new one isn't provided then, will I still be able to use/update/install Firefox on this IOS on this iMac?

Thanks! Elaine

If it ain't broke, don't fi(o)x it. Never try to be too clever. I cannot log out of OUTLOOK.COM, then after goodness knows hot long, it says that I have been kicked out and need to login again. CRAP!!!!!!!

Secure Connection Failed

An error occurred during a connection to cow.huntforenenst.com. Peer received a valid certificate, but access was denied.

Error code: SSL_ERROR_ACCESS_DENIED_ALERT

   The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
   Please contact the website owners to inform them of this problem.

As of yesterday my Firefox browser no longer displays some screens within Amazon Prime correctly. It displays what should be images as text, which is difficult to read, unlike Microsoft Edge, which displays the Amazon webpage correctly. I am running Windows 10 with a support extension through October 2026, so could it be an update from Microsoft Windows or Mozilla Firefox that has caused the problem. Thanks for your help.

Michael Archer [edited email from community support forum]

I have accessed the particular website many times but today it says, "Hmm. We’re having trouble finding that site.

We can’t connect to the server at shop.naturalcompounder.com.

If you entered the right address, you can:

   Try again later
   Check your network connection
   Check that Firefox has permission to access the web (you might be connected but behind a firewall)"

I just accidentally deleted a day of history, now it has to relearn a bunch of stuff.

Please add support for undo, so that if you do it by accident, you can reverse it.

Whenever I open a new firefox page externally, such as from the system tray or by opening a link from outside firefox, nothing happens for about five seconds and then it loads normally. When I open a new firefox page internally, such as from file ---> new window or by clicking a link within firefox, it loads instantly like normal. This has been happening since yesterday (3/13/26) evening.

I have already tried all of the following fixes and none have done anything:

Clearing firefox startup cache running firefox in troubleshoot mode running an older version of firefox disabling all my extensions disabling my antivirus disabling hardware acceleration disabling captive portal detection making sure both firefox and windows 11 are fully updated refreshing firefox reinstalling firefox rebooting my PC disabling IPv6 preventing accessibility devices from accessing my browser clearing my cookies

Since v.145, comments have been blocked on some forums for me. https://thetyee.ca is one I use regularly, and the comments are blocked. (This is a Coral Comment site.) The spinning wheel just spins (see image 2 below) and sometimes resolves as "blocked" (see image 1 below).

On rare occasions if I delete all cookies, restart the PC and the browser in a private window only, I can sometimes get comments to come up with a "login page" that successfully lets me login, and keeps the link open for a few pages for that session only, but when I open a new session, comments are blocked again. They just don't appear. when I am successful, it looks like image 3 below.

I never adjust settings, and only occasionally delete cookies, so I've looked into other help articles in the forum that have pointed out enhanced tracker protection might be a problem: I have whitelisted all the sites I use for ETP but only one or two now sometimes work properly (using disqus) while the others do not. Tyee support is unable to help - they say very few have made any complaints.

There are other sites that limit my access or functionality now because they say "You have an ad blocker installed". I don't have an adblocker installed. I've never installed an adblocker. But that's secondary. Perhaps if we get this issue solved (due to a setting?), that second issue will go away too. Or maybe not.

I see it's simply not possible to get rid of ETP. Do I have to get rid of Firefox?

When trying to set Firefox to open a file on Windows 11, it is overwritten by Firefox Nightly. I have both branches installed.

This is how it goes when attempting to set Firefox as a default application in my machine:

1. "Apps > Default Apps"
2. .mp4 (for example)
3. click the button below that displays the current default application
4. Firefox Nightly appears in this menu
5. "Choose an app on your PC"
6. "C:\Program Files\Mozilla Firefox" ... "firefox.exe" ... "Open"
7. Firefox Nightly remains in this menu

I cannot get Firefox to appear as an available app in this menu. The only workaround, although inconvenient, is to drag and drop files straight into Firefox.

Any help would be much appreciated. Thanks.

• OS: Debian (trixie)
• Firefox version: 149.0b3

Firefox suddenly crashes without any displayed error. Attempt to troubleshoot it in "safe mode" doesn't help (it also suddenly crashes.

• When I had redirected following output: "Exiting due to channel error."
• after restart, I launched "about:crashes", but there were no entries

I'm trying to move search engine from yahoo search to Firefox search engine because I had the Firefox search engine on my old phone and I liked it because it worked better than yahoo.

My microphone (stand alone) is not being detected by the website "Babel Audio" as I am attempting to connect on the website to test out my audio. My microphone does work for other programs on my computer and my taskbar does show that my microphone is connected correctly.