Firefox: форум сообщества

I started noticing that Firefox was giving me a lot of "not responding" freezes the past couple of weeks. The past couple of days I basically cannot access Firefox at all - constant, immediate freezing. I have tried uninstalling/reinstalling (multiple times), disabling hardware acceleration, running troubleshooter mode (still freezes! if it opens at all!), deleting profiles, restarting my computer, etc. I've done just about everything I can find online about this issue. Nothing has worked. I have no issues with Chrome or Edge.

Any suggestions??

Hi Community,

I’ve used Firefox for over 20 years and it’s always been my main browser, but since updating my Mac to macOS 27, Firefox has become unusable with one of my essential web apps (FlightLogger). The first page after logging in loads normally, but any click or navigation after that fails. The header stays visible, the rest of the page stays blank, and clicking links only adds a “#” to the URL with no content loading.

Safari works perfectly on the same machine and same network.

In Firefox’s console, every JavaScript file coming from CloudFront fails with “CORS request did not succeed (Status code: null)”, and I also see repeated “A ServiceWorker intercepted the request and encountered an unexpected error” messages. Module scripts are also blocked with “Module source URI is not allowed in this document.”

To rule out local issues, I’ve already reinstalled Firefox, created new profiles, cleared all caches/cookies/service workers, disabled all extensions, disabled DNS‑over‑HTTPS, disabled Enhanced Tracking Protection, reset macOS network settings, checked proxy settings, and tried different networks. The problem persists even with a completely fresh Firefox install and profile.

This started immediately after upgrading to macOS 27, and only affects Firefox. Safari loads the same CloudFront assets without any issue. It looks like Firefox can load the initial HTML but cannot fetch any CloudFront‑hosted JavaScript modules, which breaks navigation entirely.

Has anyone else seen this after updating to macOS 27, or found a workaround? I’d really like to keep using Firefox as my main browser.

Thanks in advance

How to force Firefox to display current search results. The internet has become like local FM radio. You can never find or hear what you want. When I search for latest news I don't want to read about Jimmy Carter or Barack Obama. Is there a setting to only show the latest results?

Hello,

I would like to report an issue with the Firefox Add-ons Store.

Recently, I suddenly encountered an "HTTP 406 Not Acceptable" error when trying to access the Firefox Add-ons Store. The store is completely unusable for me right now.

Here are the specific details:

Issue description: I have tried accessing the store on every network available to me, including mobile data, my office wired network, and my home wired network. Unfortunately, I get the same 406 error on all of them.

Timeline and context: Everything was working perfectly fine last week. I was able to search for and install a Markdown add-on without any issues. However, starting this week, it suddenly started returning the 406 error.

Additional troubleshooting:

I am not using a VPN or proxy. However, if I enable a proxy, the Add-ons Store works normally.

There is no antivirus software or firewall blocking Firefox's network requests.

Other websites load normally. Even mozilla.org works fine, but addons.mozilla.org does not.

I have also tried changing to other DNS resolvers, but that did not help.

Could you please help me understand why this is happening and how I can resolve it?

Thank you!

I was attempting a search for a local winery, incognito, when an account for a completely unrelated search popped up and Avast security messaged this account is compromised head back to safety. It was for a clothing company with no similar company name to the local winery I was searching for.

Hello, this is the basic problem:

The short version is that there is a problem with Firefox not interacting with the scrub bar and volume bar. (all other controls work fine) We know it's a Firefox thing because everything works with Brave. (or an interaction between Firefox and the OS at least, Firefox is heavily involved)

There is more detail and we have done some work on it here: CashyOS forum post

You can use the Firefox manifesto V0.2. video for an example, as it displays all the above problems for me.

I can get you guys whatever other data might be needed, but I kinda need an idea where to look to try and fix this, as all the other posts I have managed to find don't seem to have similar enough issues to work.

Firefox is showing me an older version of a website. When I'm opening the same site in other browser it is changes, but mozilla is still showing me previous version. what should I do to fix it?

I just recently installed the VPN on Firefox. It hadn't shown up because of my privacy settings. It works fine except for the United States connection. When I choose the other countries, it works fine, but when I choose United States, it still shows Japan (where I live). It still shows Japan, but it does have an effect. It changes it to Tokyo, where I don't live. So, the vpn is having some effect, but it is just not connecting to the United States. Why is that?

Firefox on Windows 11. When I try to open Firefox I get a message that Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window. Close does nothing, Task manager - end process does not close. Stuck in a permanent loop here. Rhonda