Firefox Support Forum

Can't connect with the just downloaded version 66.0.4 to virtually any site - not to Google, not to NYT, not even to Mozilla - Firefox won't accept ANY certificate! Following errors appear (examples): "Did Not Connect: Potential Security Issue Firefox detected a potential security threat and did not continue to addons.cdn.mozilla.net because this web site requires a secure connection. What can you do about it? addons.cdn.mozilla.net has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site. The issue is most likely with the web site, and there is nothing you can do to resolve it. If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the web site’s administrator about the problem.

Or: Warning: Potential Security Risk Ahead Firefox detected a potential security threat and did not continue to www.nytimes.com. If you visit this site, attackers could try to steal information like your passwords, emails, or credit card details. What can you do about it? The issue is most likely with the web site, and there is nothing you can do to resolve it. If you are on a corporate network or using anti-virus software, you can reach out to the support teams for assistance. You can also notify the web site’s administrator about the problem.

The explanation is as follows: Someone could be trying to impersonate the site and you should not continue. Web sites prove their identity via certificates. Firefox does not trust www.nytimes.com because its certificate issuer is unknown, the certificate is self-signed, or the server is not sending the correct intermediate certificates. Error code: SEC_ERROR_UNKNOWN_ISSUER

No problems whatever with other browsers. I'm sending this with Safari.

Hi! Netflix used to work great in Firefox on my Mac OS X 10.11.6 macbook. Now I've been getting an error message saying "Looks like your browser is no longer supported" when trying to play video on Netflix and it won't play. I noticed that it self-updated a couple times over the last few days but these updates did not solve the problem. I'm hoping that this problem can be fixed so that I can keep watching Netflix on Firefox, as I find Chrome and other browsers are very slow and laggy compared to Firefox. Thanks :)

I have encountered one web site that has several pages that display as graphics instead of text. I have visited this site before several months ago and the display was accurate then. The first image is how it looks now. The second image is how it looked several months ago. I am running Ubuntu 20.04.2 and Firefox 89.0.2. It's very strange that this is the only page that displays this way. I checked the page in Chromium and it displays correctly in that browser. Is this Firefox or quirky html?

WebGL has stopped working. I think this has happened with Firefox 91.

For example, http://webglsamples.org/aquarium/aquarium.html gives the error Status: WebGL creation failed: * tryNativeGL () * Exhausted GL driver options. (FEATURE_FAILURE_WEBGL_EXHAUSTED_DRIVERS)

I'm running Firefox on Debian on ChromeOS.

On about:support, WebGL 1 Driver Renderer: Red Hat -- virgl WebGL 2 Driver Rendered: Red Hat -- virgl

There are no WebGL errors in about:support

I've tried the Troubleshoot Mode but that made no difference.

Since the most recent update, Mozilla Firefox shows screen errors on many websites. Same after reinstall. All sites appear OK in Chrome, Opera, Tor, etc.

Please send instructions for fix.

Thanks

Since Firefox was last updated, I now no longer have the ability to access some websites such as Google, Wikipedia, and Amazon without Firefox prompting me to type something to search within those sites even though all I want to do is go to the home page.

I can still get there by typing http:// in front of it but I shouldn't have to and if I change the settings to add the search in the toolbar and then try going to "amazon.com", for example, I'm still being prompted to use the address bar to search.

Is there a way to fully disable this prompt so I can type in "google.com" or "amazon.com" without getting the search prompt?

I got this error-code on my homepage: 55e4-a579-582e-c5e4 and Error 400, The homepage works in Google, Edge, Opera etc but do not work in Firefox. What to do next?

I've migrated to a new computer and installed the latest version of Firefox. I now get this persistent message when I try to access my email on Yahoo:

"The latest version of Yahoo Mail is not supported on your browser. Please use a supported browser below or use basic Mail". I then choose the basic Mail.

I'm using the latest version of Firefox and once I move around folders for a while, (Inbox, Trash, Sent), Yahoo remembers and gives me the latest version.

How can I make this permanent?

When signing in to Wondrium.com, I now receive this message and cannot access the site ussing Firefox

Access Denied You don't have permission to access "http://www.wondrium.com/" on this server.

Reference #18.ac0cde17.1632438651.2bef339

I do not have this problem if I use Microsoft Edge.

Here are an examples using one site: [Image 1] is Firefox's default 100% zoom. Note the flushed text at the left margin. Ideally, it should look like [Image 2], however, that was zoomed down to 90% where the text body also shrinks along with it and making reading a tad harder. Obviously, not the best solution. [Image 3] is the same site on Safari. [Image 4] is taken from Palemoon. [Image 5] is reddit.com's comment page, again with the unsightly margin problem.

Any ideas how to fix this? Would really appreciate any troubleshooting tips.

Two Questions:

I have been using BookBrush.com on Firefox for a couple of years now, but for the past two days, when I try to open it, either by entering the URL directly or clicking on a bookmark, it does nothing. It won't open at all. I can open it in a different browser, though. Can you tell me what's going on with BookBrush on your browser?

Also, when I try to access the website LuanaEhrlich.com, it doesn't load with all the images. It loads perfectly on another browser. Can you tell me what the issue is?

Thanks so much!

Dear Sirs, I can't get image at website wich URL is: https://iris.mts.rs or https://iris.mts.rs/EPG/jsp/webtv/index.html#home. Please tell me what I have to do in order to get image for those URLs? At other browsers like Chrome and Edge the image appear immediately. Best regards, Saša Pravdić

e-mail: ...

edited email from public and search/spam bots view as this is a community support forum.

A few weeks ago the product reviews at Costco.com disappeared. I spoke with Costco today and they said they could see them and that I should switch to Google Chrome for better results. I tried turning off the privacy, no trackers on their site but it didn't help. Logging in or not didn't make any difference. AdGuard 7.6.1 is disabled on Costco's site. The 5 star rating system woks fine with Amizon and other sites. I am also using Norton 360 if that makes a difference. Any solutions?

As the subject shown, there are some wrong things happened on UI appearance, and hard to describe. Does anyone know to fix the problem to let pages display properly as the Chrome shown?

Thank you!

Today I read an extremely outdated article posted by Mozilla and I wanted to report that but Mozilla makes it damn near impossible to reach them. I found that the Firefox help forum was sadly the closest thing.

Recently, text is missing when I try to look at a document on a web site. And using Spectrum for my ISP, when I open their web mail with Firefox there are unusual symbols over the selections in the menu bar,

Since the update to the new Firefox (92.0), quite a umber of sites cant load anymore as a secure connections cannot be established. This does not pertain some ark web sites, but sites from reputable companies which had previously loaded without issues. Indeed, the mobile browser still happily displays the sites now forbidden by Firefox.

I found that an update of Edge created equal same issues with that browser.

I am a HTML, PHP developer, but lately I am going crazy because the browser doesn't refresh the page when I make changes in the code, apparently the page is refreshed from cache and is not showing the changes. Could You fix that Please. I tried the recommendations of press Shift and the refresh button and the Control, Shift, R, key combination, but that doesn't work. Thank You Very Much.