Firefox Support Forum

The Add-ons Manager tab is automatically presented as one of the tabs when I start Mozilla. How do I configure Mozilla so that the Add-ons Manager tab is not presented?

Current version of Firefox on Windows 11. Menu bar hidden when Firefox started. I have tried every setting suggested and understand how to turn it on, but next time I start Firefox, menu bar is hidden again. Reinstalling Firefox -- no joy. Restarting in safe mode -- no joy. Help!

Windows 10 64bit pc. After factory reset and reinstall of Firefox, 2 extensions are enabled but the menu bar won't allow them. These worked OK before the reset.

Troubleshooting within Firefox won't work because it disables the extensions.

The messages from Extensions say "Can't read and change data on this site" The extensions are enabled (turned on).

The 2 extensions are Malwarebytes Browser Guard and Video DownloadHelper I am using DuckDuckGo as my browser. I tried switching to Google, but same problem.

The title describes the problem I'm facing. I don't really use other sites that have videos other than Youtube. But I notice that the videos freeze quite often and audio just continues to play. The videos then unfreeze and skip multiple frames. I've noticed clearing browser cache seems to help but it doesn't help for longer than a 2 min video at best. At worst, it doesn't affect it at all.

why does firefox open 15 sessions in task manager when i openy have 5 windows open!!

its seems rediculous the software opens 3 times the amount of windows i have open

s u c k i n g THE HELL OUT of memory and cpu

i can understand DOUBLE the amount BUT TRIPLE???? give me a brake!

I keep being told on certain websites to turn off my ad blocker. I don't have one. I don't even have one in the Extensions that's disabled. I have no idea how to get past this. What's turned on that I don't know about?

Hi all Firefoxers,

There are a few sites that I always access via a URL that could look like :

https://device.domain.com/admin/

When I went to visit that device, typing in the URL bar "device.domain..." , Firefox's 1st default suggestion shows as https://device.domain.com/

The problem is that I never visited that site, the way to access this device is https://device.domain.com/admin/ - there's no way to reconfigure the device and have an auto-redirect to .../admin location.

https://device.domain.com/ is not in my Browsing History nor do I have an open-tab. In the settings Privacy->Address Bar, disabling "Browsing History" removes https://device.domain.com/ from the suggestion list but it also removes all suggestion from the history. This is the expected behavior, the bug required fix isn't related to this.

If the "Base URL" isn't saved in the Browsing History, how can someone tell Firefox to only suggest absolute entries from the history?

This happens now a lot, sometimes I can uninstall Firefox reinstall and it works. That worked this time but only for a few days. I am back once again to where I get this error on every place I visit. I have cleared my cache etc.. uninstalled reinstalled did a restore. It is only Firefox all other browsers work fine. No idea what to do anymore and am sad because I prefer Firefox. I only have standard windows 11 home security stuff installed so nothing special or fancy firewalls. Tried turning on default fire wall. Tried all the instructions on the more info page the error screen leads to.

This error occurs on most all websites or places I need to log into

Secure Connection Failed

An error occurred during a connection to mail.google.com. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

   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.

Anyone know why this is happening and a solution?

I recently traveled to Australia for two weeks. While there, I used my mac laptop (with Firefox as my primary browser) on a mix of both wifi-without-VPN and hotel wifi with a VPN back to my home network activated.

I have been back home for more than a week. Other browsers on the same laptop as well as other devices (like my phone) that I took with me on the trip correctly reflect my location (east coast, USA). However, Firefox stubbornly insists that I am still in Australia. The net effect of this has been to break my access to YouTubeTV, which is not available in Australia.

I have tried: - Logging fully out of my google account on firefox and logging back in (at which point the 2FA prompt on my phone says I'm trying to log back in from Australia) - Deleting all cookies, cache and website data - Fully uninstalling Firefox, including deleting the Firefox folder in ApplicationSupport

None of these have had any effect.

Within YouTubeTV, I can force an update to my location, which will temporarily reflect correctly that I am in the US. But it still won't let me play anything if I'm using Firefox, and within Firefox, will soon revert to location unknown. Other browsers on this laptop, and other devices, work fine.

I am at my wit's end. Please advise.

About a month ago Firefox started giving me BAD REQUEST for URLs generated by the MLS system all of us realtors use.

This URL works fine in Safari, but not in Firefox any longer. What has happened and how/when will this be resolved? JPaul

Bad Request

Your browser sent a request that this server could not understand. Size of a request header field exceeds server limit.

I started with Netscape, lived through Mozilla and then been FF ever since. I love it. But increasingly, I am running into problems with using features in many websites.

For instance with Cigna Health, you can't reset your pw and open certain other links. Cigna Support has a simple solution which has always solved my problem: use Chrome or Edge.

B&H Photo Video mostly works but for instance if you are looking at the pictures associated with a product review and try to enlarge them, FF won't do it. Chrome and Edge do it.

I am finding more and more websites that have these glitches. It's almost as if some website designers are not paying any attention to compatibility of their product with FF.

Am I missing something in the config of FF or are these issues real and likely to get worse over time? I am very worried that if it continues that I will get a message like "Many features on this website are not compatible with FireFox."

I am not a programmer but if there is anything I can do to help, I am glad to do so.

sfoAlan

Firefox changed the design on tabs and other features some time back. The whole user experience has been worse since the UX design was changed. For example, it's impossible to find out without going through tab after tab, which one is active and playing. I wish there was an option to reverse back to the old design.

Hello, sir my blog is new update. i use google chrome speed is normal opening blog. i try some firefox open my blog some speed down in opening.

I am accessing my ISP to download the security software. I need to be able to select the Operating System. When I click on the drop down box I am prompted for the OS, but when I select it the drop down box does not populate. I then get a message to select the OS. This works with Microsoft Edge.

I have Firefox set to open on the default home page with 2 rows of shortcuts. After an update yesterday, all my shortcuts disappeared on my work computer. They are still there on my laptop however. I tried to sync, no go. I have tried to re-add the shortcuts manually and it won't save it. It is important that I fix this as I have several tabs open and signed it to different websites that I work with and this saved me a lot of time.

Help!