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I often receive a 403 error when using Firefox Every time, before this happens, I get the unsafe website warning and then the 403 error when I continue anyway

I am using the latest version at the time of writing These errors only occur on my desktop PC I have tried to replicate this issue on both my phone (Android) and another laptop(Windows 11) but all the websites work normally on there.

I have tried the following, none of which have any effect:

• Clearing cookies
• using Troubleshoot mode
• Restarting
• Changing Useragent
• Using "Forget about this site"

The following do fix the issue

• Using a VPN
• Using Google Chrome
• Running Firefox in another profile

Going through the privacy and security tab and reseting all the settings sometimes works but only temporarily

The following are a few websites where the issue occurs

1. https://kdice.com/
2. https://latinitium.com/
3. https://theysaidso.com/
4. https://opensource.org/
5. httpe://obsidian.rocks/

https://github.com/uBlockOrigin/uBlock-issues/issues/3468 https://www.reddit.com/r/uBlockOrigin/comments/1h0f3wg/ublockorigin_can_cause_the_black_screen_of_death/

The extension developers claim that the issue is with Firefox and deny no fault whatsoever.

hello, i am having trouble fixing the context menu. im assuming the browser updated today and something broke because the context menu is now larger than my screen and 90% of the buttons are non functional. how do i get it back to how it was previously. there are at least 5 different buttons for "cut, copy, paste" and options for things ive never seen before like "reveal password, copy phone number" and options that look like they only work on videos like "speed and loop" and theyre on every site i right click on. how do i get rid of all the excess choices and revert it back to normal

Hello, I have uninstalled and reinstalled firefox twice using two different ways found on the community/mozilla website through chrome and I am still having trouble. It started a couple weeks ago when I received a notice at the top right hand of my firefox page for an update. I tried and it shows as Unable to connect. I tried various ways to connect with mozilla with no luck. I uninstalled, restarted my computer and reinstalled twice and still having the same issue. I lost all my plug ins and add ons after the reinstall and now I can't not even get them and can no longer sign into my firefox account through firefox. Anything that has to do with mozilla I can not reach unless I use chrome which I don't like doing. I have searched the community and nothing seems to help and I even submitted a help question in help community but no responders. Anything which I found addressing Unable to Connect was years old anyway. I can only assume it had to do with the update pop up which I never got to do and assumed a refresh or a reinstall would take care of it but it hasn't. What can I do? Thank You, Charyl

FedEx updated their website and you can't see the legacy site anymore. I am not able to view/print FedEx invoices on Mozilla - but it works on Microsoft Edge. Why can't I view/print from Mozilla?

Thanks for your help!

I saw else where disabling hardware acceleration fixes this, but how about you actually fix hardware acceleration!?! It exists so I don't have unneeded load on my CPU

Thunderbird is not working anymore. I can start writing an email but after about 5 min it dont take any characters any more. Its lagging and does out. Its in the draft folder and I ry to open but it will not work. If I just write a short message its no problem but as soon as I start write longer messages it will be trouble. It doesnt help restarting the computor. I use win 7 and the latest version. The problem started about a week ago. Writing this is no problem but if I would do it in Thunderbird it will not work by this long in the text. Best regards Stefan stefan@besthe.se

Hi,

The newest Firefox has an issue with properly parsing the javascript links in the ACS research journal articles. In these research articles, citations are clickable numbers in parenthesis. Clicking on them leads to a pop-up frame that gives detailed reference article information.

However, with the latest version of Firefox these citation links will only respond properly to the first click ever on the page. After you close the pop-up frame, any subsequent clicks on any of these links will have no response.

I attach an example article below. This bug has been repeated under Trouble Shoot Mode and I do not encounter the same issue with Chrome brower. https://pubs.acs.org/doi/10.1021/jacsau.2c00048

When I access chat.google.com and attempt to play a video that is uploaded to chat, it will not play. The built in player opens with a red play button but clicked it does nothing. These videos used to work up until sometime earlier this year. Most of the videos are uploads from someone's phone and they appear to be mp4. I've tried private windows, removing firefox along with all program data and profiles and starting with a clean slate with no luck. Other browsers play the videos fine, just not firefox. Attempting to play videos that used to work no longer work. Suggestions?

Scenario: I am running a node.js UI that proxies requests to the backend API. When `timeout=10` (or any valid timeout) is located in the request URL, the request will be proxied at the timeout interval ten times. In this example, every ten seconds it will reattempt for ten attempts.

If I run the same code in another browser's console, it is only executed once.

I am suspecting that there is some pre-parsing of the URL that is occurring that is making this happen.

Fetch Command: ``` await fetch("http://localhost:8080/config?timeout=10", {

   "credentials": "omit",
   "headers": {
       "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:132.0) Gecko/20100101 Firefox/132.0",
       "Accept": "application/json",
       "Accept-Language": "en-US,en;q=0.5",
       "Content-Type": "application/json",
       "Sec-Fetch-Dest": "empty",
       "Sec-Fetch-Mode": "cors",
       "Sec-Fetch-Site": "same-origin",
       "Priority": "u=0",

"Timeout": 40

   },
   "referrer": "http://localhost:8080/swagger/index.html?config=/config/swagger",
   "method": "POST",
   "mode": "cors"

}); ```

In the POST API, there is a 30 second sleep, then it raises a 408 error code.

Environment: Firefox 132.0.2 (64-bit) Windows 10

I've updated my MacBook from MacOS 14 to 15.1.1 and it seems various add-ons are not working in Thunderbird including CardBook and Mail Merge. Others like XNote++ and Send Later do seem to be working. I've checked for updates to the add-ons. I'll get in touch with their developers as well. Has anyone else experienced this?

hello I use FF 132.0.2 (64- Bit) and Proton VPN version 3.4.3. since one of the latest updates of FF the connection to the WEB is terrible slow. I tried the Troubleshooting mode and the reset of FF, there is no improvement. Other browers do not have this problem and without running VPN the speed of FF is as it should be. thanks and sorry for my German Englisch HI

When navigating to msn.com/en-us, and about 5S after the page loads, the majority of the page is covered with an ad. This only happens when using an ExpressVPN Santa Monica connection (most reliable and fastest).

If I use another VPN server location the problem is not present. Additional information: - Location: Dongguan, China - Using Google Chrome does not cause a problem. - ExpressVPN have no solution or explanation at this time. The VPN app is set to block ads but this does not help - If I connect using Surfshark there is no problem. - OS is WIN10 64-bit fully updated. - Equipment is an Asus notebook. - This issue has only appeared on or about 5 Nov which is around the time Firefox updated. - I have updated manually but no luck.

I have attached a before and after shot.

Any suggestions will be much appreciated.

How can one avoid this freezing of Firefox when protecting from Android to laptop pc via Samsung flow?

(samsung flow: android projection to pc; freezes firefox)

get 1 connection to site, go to read other articles get this message. How am I to get rid of this and be able to read articles on newsmax.com? Secure Connection Failed

"An error occurred during a connection to www.newsmax.com."

   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.

I get "unable to connect" on links from a google search. I can manually type the url from the link, and it goes to the site.

This has started recently, no matter what I search for.

I deleted data, in settings, re connected my mozilla account, and it's still happening.

Hi - I have Firefox set as my default browser and Google as my search. It still shows up in my settings as Firefox (default). For some reason, even when I click on the Firefox icon, Bing overrides it and takes me to the Bing browser / search page. I have gone through settings a dozen times and cannot figure out how to fix this! Help!

Even after attempting everything in the "Firefox can't load websites but other browsers can" section, my pages (youtube, pinterest, bluesky, etc.) still won't load, Are there any further fixes I can try? I really don't want to swap back to chrome.

I've tried the new thunderbird mobile. Very good indeed. Just two things missing for me. There is no way to add/delete a new folder. Second there is no way to print an email. Let me know when these points might be included.Thanks