Firefox Community Forum

At some point, I told firefox my credit card details, and enabled supplying them to websites on (my) request.

This has stopped working, It offers the correct credit card (at least the correct final digits) but does nothing when I click on it.

A previous article suggested that going into settings and editing the credit card might fix this, presumably because this undoes some corruption previously introduced by firefox code.

I tried this and found that clicking on "edit" is also a no-op.

-- I'm running Firefox 150.0.3 (64-bit), installed as a "snap', on kubuntu 26.04 LTS

My installed extensions are OneTab, Proton Pass, and uBlock Origin.

Firefox has been repeatedly auto-upgraded - approximately every two weeks - until I got sick of the churn and researched how to stop it.

The OS has been updated to a new version, once, and had various bits and pieces upgraded repeatedly.

It's likely that I supplied the credit card while still on the versions installed with this system, so there's been time for repeated upgrades to break something.

I do not log into firefox, i.e. I don't share this firefox config. with any other firefox installations.

I'm reposting a question already opened here because a moderator suggested to do so. Actually I though I was posting to the international forum from the URL...

I was trying to access a local HTTPS website of an embedded device (a Siemens S7-1500 PLC) that is using a self-signed certificate, but was unable to go on (attached image #1, in Italian language) due to the the SEC_ERROR_REUSED_ISSUER_AND_SERIAL error. I've browsed a similar PLC webserver in the past, so the fact that the device exposes a similar certificate serial number is not so strange for me, considering also it's self-signed.

The problem is that I cannot follow the instructions of the Mozilla knowledgebase here because I'm not able to identify the correct certificate of the website!

In the attached image #2 you can see that the connection is detected as not encrypted, I suppose because only the form part of the HTML that is posting the data using HTTPS while the rest is using HTTP, but I'm not sure. If I click on the padlock icon (attached image #3) the info about the current certificate is not displayed.

Then I went into Tools > Options and searched for "certificates"; as you can see in the attached images #4 and #5, neither in the Servers tab nor in the Authorities tab I can find any item that is related to 192.168.10.2 (the webserver IP address) or Siemens (the embedded device manufacturer). But unfortunately the error persist! Initially there was a 192.168.10.2:443 line in the Servers tab and I removed it and restarted Firefox, but it didn't solve, so at the moment the situation is the one depicted by the attachments.

I had to use Microsoft Edge to access the website, but I would like to solve this issue and use Firefox instead. Is there anything else I can do to bypass the error? Why doesn't the error page provide a way to correctly identify the wrong certificate using its fingerprint and/or name? Or, maybe, is there a way to disable this check for local IP addresses or for items in a whitelist?

Thanks for your help.

Pretty simple. Every time I click any "news" link on my home page in Firefox it always runs into a pay wall. This is crap as these losers get a hit count to their site, get to load ads (for some people), and so on but I don't get to read the article. And who know s what kinda crap they are dumping into my cache. This needs to be fixed or the "feature" removed. This is basic privacy shit not included in a browser that tries to brag about privacy features.....

Using the Firefox browser, I tried to copy an image and wasn't able to do so. Then I copied an image using another browser and wasn't able to paste it into a Facebook post on Firefox. Please tell me how to fix this. I can't copy/paste text either. Could the problem be my Mozilla VPN?

Hello there.

Since last update i'm unable to browse websites like youtube, social media and all other websites with video content. Video often fails to load,the wholewebsite is not loading, freezes while played or while exiting full screen mode. All of these freezes the browser - the site cannot be refreshed, links does not work. The only way is to close the tab with the freezed page or kill the Firefox process in windows Task Manager. Refreshing, re-installing, deleting or using different profile don't work. Same with add-ons. Seems like the issue lies within the browser and it started to appear since last update.

Hi, for the past month or so I'm not able to reply to emails using Apple Mail on Fire Fox browser. The arrow gets cut off in the upper right hand corner. Also I'm not able to move emails into their appropriate folders by selecting the folder icon in the top middle of the screen.

All my attempts to pay online with 2 out of my 3 cards have failed in the last 2 weeks. The Mastercard says it has connected to my bank and I'll get an SMS - but the SMS never arrives, and when I phoned my bank, they said they had no authorisation attempts reach them at all! The Visa card simply says it failed at the first step, without saying why or serving up the usual security dialogue. (The other Visa card just works).

I suspect the Autofill may be the problem here. I've recently had other scenarios where FF filled in a field for me, but the Javascript behind the website refused to accept it, eg saying it wasn't a valid phone no when it clearly was. The only way to get round this seems to be to type in the complete value yourself, which rather defeats the object. It could be something else, but it's clearly dependent on which software's running behind the card, as the third card succeeds.

All the tabs, in both my profiles are constantly crashing. I cannot keep at a task for more than a few minutes without needing to restart the tab. Is this a setting problem? I've cleared the cache, and reset Firefox, to no avail. Thank you for any relevant advice and/or assistance.

This past Friday morning, May 29, I tried to access www.healingwell.com which I have always been able to do. But this time Firefox gave me a red screen with message: "Firefox blocked this page because it might try to trick you into installing programs that harm your browsing experience, for example, by changing your homepage or showing extra ads on sites you visit." And same message again over the weekend. But yesterday, Monday June 1, I was able to access that website, and all seemed normal. Why did Firefox give me that message on Friday, but not yesterday or today?

I edit a newsletter substack and sometimes I have links embedded in it. Mozilla denies me access to those links when I check the newsletter. Do I have to cancell Mozilla protection to have full access to the links in my newsletter from substack?

Hello! Is it possible to recover older open tabs from a broken device that had sync activated? For a while they appeared in the hamburger menu in the top right, but now they suddenly disappeared, and under the "connected devices" I cannot click the device or anything. It went broken 2-3 months ago. Best wishes!

I want to access Nectar but I keep getting this message Please update your browser settings. How exactly do I do this? bold text Uh-oh! Your current browser settings won’t let our site run properly. To take part fully and earn rewards without issues, please update these settings: 1. 🍪 Allow cookies

First-party cookies are needed to keep you signed in and save your preferences. 2. Enable JavaScript

This is required for surveys, rewards and key site features to work. 3. 🧩 Allow essential scripts

These help the site run securely and reliably, including tracking progress and rewards.

Note for iOS users: If you use iCloud Private Relay, you may need to disable it.

You can update these directly in your browser by going to Settings, then Privacy or Security. Once updated, refresh the page to continue and enjoy the site.

성인사이트가 크롬과 엣지에서는 정상적으로 열리는데 파이어폭스에선 보안 연결 실패라고 뜹니다. 원래 파이어폭스에선 성인사이트를 차단하고 있는 건가요? 아니면 차단을 해제할 수 있는 방법이 있는 건지요 Adult sites open normally on Chrome and Edge, but on Firefox it says security connection failure. Is Firefox originally blocking adult sites? Or is there a way to unblock it