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  • Web compatibility

Firefox conflict with Wordpress site

I have a Wordpress.org blog. In the past few months, Firefox has developed a conflict with my site. I can no longer save posts in draft or publish mode. Similarly, it … (read more)

I have a Wordpress.org blog. In the past few months, Firefox has developed a conflict with my site. I can no longer save posts in draft or publish mode. Similarly, it will not autosave or save a post revision. When I try to do so, the homepage displays instead of the post edit page. Also, when I try to use the WP image functionality I can upload the image to my server, but it fails to insert it into the post edit box. I can 'manually insert the code and the image will display.

Troubleshoot mode, clearing the cache did not work. But I could perform all these functions in private mode. I can't figure out whether this is a browser issue or a WP issue or a conflict between the two.

I have none of these problems in Chrome.

Open

In Jira, Drag & Drop File Attachment is not working.

When I try to attach file via drag & drop, the Firefox always display "Download file" as attachment. I don't know why because it properly worked before. but after som… (read more)

When I try to attach file via drag & drop, the Firefox always display "Download file" as attachment. I don't know why because it properly worked before. but after some updates, drag & drop is not working.

The version of Jira at my office is not changed for years(v8.12.1#812002-sha1:7c28d59) and drag & drop is working via Chrome, Edge and etc.

Open

After the last update when on face book i get this message your browser does not support this feature. It only happens when I try to play a game

I have been using Fire Fox for quite a while. When im on Face Book all is fine until I try to play one of the games that I have been playing on fire fox for years. I get … (read more)

I have been using Fire Fox for quite a while. When im on Face Book all is fine until I try to play one of the games that I have been playing on fire fox for years. I get error Your browser does not support this feature. It just started last night after fire fox latest update update

Wayne Rempel
Open

can not copy and past in ebay descriptions . will work on edge

can not copy and past in ebay descriptions when trying to make a listing .Also can not type in the description box will work on edge trying to list but can not as i can … (read more)

can not copy and past in ebay descriptions when trying to make a listing .Also can not type in the description box will work on edge trying to list but can not as i can put information in description box. Tried on edge works fine. turned off enhanced protection still same.

In during a search this problem has happen before after updates

Open

Intranet site 401 Unauthorized kerberos SSO

Hi! We have a intranet site that works in Edge and Chrome without issues with the site added to "internet options". But for some reason we are getting 401 Unauthorized w… (read more)

Hi!

We have a intranet site that works in Edge and Chrome without issues with the site added to "internet options". But for some reason we are getting 401 Unauthorized when trying to access it from Firefox. I have tried adding the urls to: network.automatic-ntlm-auth.trusted-uris network.automatic-ntlm-auth.allow-proxies: true network.automatic-ntlm-auth.allow-non-fqdn: true network.auth.force-generic-ntlm: false network.auth.force-generic-ntlm-v1: false

Ingocnito mode , same error. I have tried disabling all plugins. Disabled DNS over HTTPS.

HTTP/1.1 401 Unauthorized Server: Microsoft-IIS/10.0 WWW-Authenticate: Negotiate X-Powered-By: ASP.NET Date: Mon, 25 May 2026 08:15:41 GMT Content-Length: 0

Regards Rasmus

Open 2

Impossible to connect FACEBOOK

Hello, For few days, it's impossible to connect to FACEBOOK. I have the latest version of FIREFOX, but I have to use another web browser (EDGE) to connect to FACEBOOK. T… (read more)

Hello,

For few days, it's impossible to connect to FACEBOOK. I have the latest version of FIREFOX, but I have to use another web browser (EDGE) to connect to FACEBOOK. The problem is the same with my two computers with the latest WINDOWS.

Thank you for your help to solve my problem

Solved 9 118

Google has added some AI 'ads' to their title page? How do I remove it, block it?

Google has added some AI 'ads' to their title page? This just appeared a day or so ago on my system. How did I remove it, block it? Attached is an image of what I am a… (read more)

Google has added some AI 'ads' to their title page? This just appeared a day or so ago on my system. How did I remove it, block it? Attached is an image of what I am asking about. What is interesting is in Chrome I can explicitly turn this junk off. But when using the Google search title page with Firefox, there appears to absolutely no way to disable it... very nasty way of forcing you to use Chrome?

Moderator note: Edited per OP's request.

Solved 7

my desktop using firefox prevents me logging in to specific sites I used to log in to.

this month I started having issues logging in to my pharmacy and my bank using firefox on my desktop computer. I get stuck in a Scanning By Zero Phishing loop. Ultimately… (read more)

this month I started having issues logging in to my pharmacy and my bank using firefox on my desktop computer. I get stuck in a Scanning By Zero Phishing loop. Ultimately I am forced to use Microsoft Edge to access these 2 accounts. My bank actually apologized for interrupting my login saying something about my login made the bank think I am a bot.

Oddly enough I have 2 laptops, mine and my sister's, that do not have this issue.

Obviously I have identified my desktop computer as the problem but I have no clue how to fix it.

Steps I have taken so far: clearing browser cache and logging into windows safe mode and clearing the temp and prefetch folders. I have had intermittent login issues in the past and these steps USED TO WORK but not anymore.

Open 4 1

After Firefox updated, I cannot list on Ebay. It keeps giving me an error message

Every since Firefox updated, I have not been able to list on my Ebay store. I can list on my phone and if I am using Chrome, but not Firefox. I need to be able to work … (read more)

Every since Firefox updated, I have not been able to list on my Ebay store. I can list on my phone and if I am using Chrome, but not Firefox. I need to be able to work on my Ebay account. Please advise what I can do. I keep getting an error message from Ebay This is the error message:

Skip to main content Well, this is embarrassing. We're sorry, but the listing tool isn't working right this second. Please try again later. Go to Seller hub Page Copyright © 1995-2026 eBay Inc. All Rights Reserved. Accessibility, User Agreement, Privacy, Consumer Health Data, Payments Terms of Use, Cookies, CA Privacy Notice, Your Privacy Choices and AdChoice

Open 1

I can't login to my x.com account from 115.35.2esr

Hello! I can't login to my x.com account from Firefox 115.35.2esr on Windows 7 SP1. I'd was stay logged in many years before I accidentally clear my cookies. And now I ca… (read more)

Hello! I can't login to my x.com account from Firefox 115.35.2esr on Windows 7 SP1. I'd was stay logged in many years before I accidentally clear my cookies. And now I can't login. It just reloaded input form when I type my login and press "Next"button. I tryed login from Private mode, I tryed to disable all addons. Nothing helped. But I still can login/logout from Firefox 140.10.2 on Windows 11.

In Firefox console I see

errors [ {…} ] 0 Object { code: 399, message: "Could not log you in now. Please try again later. g;177706962260066684:-1778241640627:geToqptptoIvemMOHotwS0TF:1" } code 399 message "Could not log you in now. Please try again later. g;177706962260066684:-1778241640627:geToqptptoIvemMOHotwS0TF:1"

and

Corporate Policy: Skip unsupported function name "identity-credentials-get"

Can anyone help me to fix it?

Open 4 9

Facebook will not connect at all

For 24 hours now I have not been able to connect to Facebook via Firefox browser on my laptop at all. I can connect on my phone, but not my laptop. I've made sure there… (read more)

For 24 hours now I have not been able to connect to Facebook via Firefox browser on my laptop at all. I can connect on my phone, but not my laptop. I've made sure there are no extensions on my browser, my firewall is off, all cookies and cache have been cleared, I even Uninstaller Firefox and reinstalled it. When I try to bring up Facebook, nothing happens. It won't even bring the page up. All other websites work fine. I can't even bring up Facebook to clear the caches in Facebook per the troubleshooting guide. It says to open Dacwbook and click the lock on the address bar, but I can't even open Facebook. What am I missing here?

Solved 12

Works in Edge, but not in Firefox?

I have questions about websites I visit that don't seem to work in Firefox, but when I visit the same sites in Microsoft Edge, the sites work fine. Previously (one site, … (read more)

I have questions about websites I visit that don't seem to work in Firefox, but when I visit the same sites in Microsoft Edge, the sites work fine. Previously (one site, 6 months ago, the second, in the last month), I had no issues with either site. It makes me wonder whether some protocol or requirement has changed that has caused my recent experience. Both sites are secure sites (banking and bill-paying related), and when I first experienced it, I didn't give it much thought since it happened while using the Windows 7 machine. I am now using a newer Windows 11 machine.

My most recent visit to the municipal site (water-bill payment and statement download) resulted in the new tab displaying

HTTP Status 400 - Bad Request

Type Status Report

Message Please provide a ref.

Description The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing). Apache Tomcat/9.0.110

At the credit union site, I click a link that results in rotating arcs atop the webpage's background, and it neither times out nor displays the next screen (a link to a specific account). When I use the credit union's app on my smartphone, the next page displays as it should. (A message reply by the credit union showed a lack of understanding.)

Most of the Firefox settings are at its default settings, and the two sites are allowed to open pop-up tabs.

After 30+ years of using Firefox trouble-free, reverting to Edge is a step backward. (Every time I finish using Edge, I have to run my spyware program.)

Thanks Rapidman

Solved 2 54

Firefox working with CO Peak website to upload and read documents

Hi, I am using Firefox version 150.0.3 (64 bit). It says it is up to date and I'm on Windows 11and it is fully updated. I use the Colorado Peak website but can not upload… (read more)

Hi, I am using Firefox version 150.0.3 (64 bit). It says it is up to date and I'm on Windows 11and it is fully updated. I use the Colorado Peak website but can not upload documents to them or read my mail from them. I have to go to another browser to do that.

I have used Firefox as my default browser for over 20 years I don't want to give it up or use another browser even to do just a few things once in a while. Peak tech support says they have communicated with Firefox but gotten no response. Help!!

D

Open 2

Cannot paste images from clipboard into Doubao (AI chatbot) on Firefox

Description of the issue: I am experiencing an issue where I cannot paste images from my system clipboard into the chat box of Doubao (a web-based AI chatbot: doubao.com… (read more)

Description of the issue: I am experiencing an issue where I cannot paste images from my system clipboard into the chat box of Doubao (a web-based AI chatbot: doubao.com).

Steps to reproduce:

   Copy an image to the clipboard.
   Open doubao.com in Firefox.
   Click on the chat input box and press Ctrl + V (or right-click and Paste).

Expected result: The image should be pasted into the chat box and ready to be sent.

Actual result: Nothing happens. The image is not pasted.

Open

Unable to download bill from banking site

Hello I use a banking website to access my bills electronically. When the bill is selected, a PDF copy is supposed to auto download. For sometime now I have been getting … (read more)

Hello

I use a banking website to access my bills electronically. When the bill is selected, a PDF copy is supposed to auto download. For sometime now I have been getting an error 'HTTP 405 - HTTP method GET is not supported by this URL'. When I follow the same process in Safari the bill downloads without an issue. This issue has been occurring for quite some time (maybe at least 24 months).

Can someone please advise whether the source site, or Firefox, is causing the problem, and what needs to be done to fix it?

I am using the latest version of Firefox with Venture 13.7.8 on a Mac Mini 2018.

Thanks

Open 2

Post FF 150 Breaks Synology DSM (7.3.x) Drag & Drop Uploads

Hey everyone! I just noticed that post FF's 150 update, I can no longer drag and drop folders into my DSM window. This has been a non issue for over 6 years and all of a … (read more)

Hey everyone!

I just noticed that post FF's 150 update, I can no longer drag and drop folders into my DSM window. This has been a non issue for over 6 years and all of a sudden, poof. I did find that you can still to this on Safari, but long term, Mozilla and Synology need to address this. There's already a post on the Synology fourms about it and I've emailed their Support Team to see what they have to day. Posting this here in case anyone has found a workaround in the Config settings pane.

Thanks! --Brian

Open 9 45

Latest release make logins to some sites difficult

Prior to the latest release I could easily log into the site https://fun.chicagotribune.com/game/tca-jumble-daily. I can login in but once at the player page I must enter… (read more)

Prior to the latest release I could easily log into the site https://fun.chicagotribune.com/game/tca-jumble-daily. I can login in but once at the player page I must enter command shift R to reload the page afresh. The response is very slow relative to the previous edition of Firefox. There are other examples I could site with similarly odd behavious. Just today I tried to make a reservation with resy. I got a total runaround to my entries. I eventually gave up and used Safari and everthing proceeded as expected and I made my reservation.

Open 1