Firefox Support Forum

I recently came across a webpage that is made to look like a message from Firefox letting you know you need to update the browser. Where should this be reported? I'm sure this is some malicious download though I have no way of checking.

I have been using Firefox for many years and never had issues. Two days ago, I turned on my HP with Windows 10 and I got a pop up message something about Error Platform 126.0 XUL Runner is not compatible. I could not access Firefox, Google, or the internet. I uninstalled Firefox and reinstalled, but after that, everything runs very slow. Each time I go into a website, it can take up to over a minute to pull up! I cannot even delete email from my Gmail! It's piling up. Downloading can take over an hour! I checked all the trouble shooting forums in Mozilla and tried just about everything. I went back into "About:profile"s and created a new profile. It it did not make any difference. I also did a Firefox refresh. Did not help any. I went back into the profile I had before the XUL error because my bookmarks were there. Still slow. I cleaned out the cache, in both Firefox and my Windows 10. made no difference. I only have three extensions in Firefox. I don't know what else I can do to fix this. Also, my drivers and other software are automatically updated by Windows. My HP is only 2 years old as well. Everything was fine in Firefox until that XUL error message popped up and I had to uninstall and reinstall Firefox. That is when everything became agonizingly slow!

Sadly, I am now forced to leave firefox. My passwords are getting "forgotten" more and more each day. Did i get hacked? Few passwords like proton mail I don't actually have anywhere else. Auto-Backup of firefox seems to be of the same day as the original??? So it loses the data then saves it twice? who designed this? I'm angry, not at firefox/mozilla. angry at myself for putting my trust in the first place. Chromium doesn't sync so it leaves me with chrome FFS. Does someone has a magic wand to recover the lost data? login.json is same day as original so not an option.

I want firefox to open a .ics file in google calendar rather than the "Use Calendar (default). I've already run the script linked here : https://support.mozilla.org/en-US/questions/1196085 to register the webcal protocol handler.

The webcal It shows up in the Settings / Genera / Applications list See attachment "Webcal.jpg.

But earlier in the applications list, there is a "Calendar" entry that only allows me to go to the "Use Calendar (default) or ask or save. See attachment Calendar.jpg

It seems like Firefox uses the Calendar entry before it gets to the webcal entry and so it always opens the default windows calendar application.

Help! How do I get firefox to use the webcal entry and not the calendar entry.

Thank you.

Before the update on April 29 I had no issues with my eBay account on Firefox. Now I am unable to get the pages to work properly. I cannot list any items for sale nor can I change any of my items in my store. Nothing saves and then redirects me to the homepage. eBay is one of my trusted seitz so I have no idea what’s causing this. It’s not eBay because my other accounts work fine on Chrome and on Safari. It happened exactly when the last update happened. And the only way that I can actually get back to the original site is to clear all my cookies and log out and start all over again, only to have the same issues over and over. I don’t know who to contact. I’m losing money in my Business every day because of this so I’m going to have to change my browser unfortunately if I don’t get a solution as soon as possible. Thanks for anyone who can help appreciate it.

If I Close (not Exit) FF and then later Open it, the new Open page is a different size and screen location than when it was last closed (I have to then reposition the page manually).

Is there a ABOUT:CONFIG setting I can can change to stop this?

when i go to my amazon vendor central account i cannot access purchase orders. i get to a blank page that has this code on it:

'),t.close()}();

no idea what that is or why it is happening. then when i go to geminisound.com i keep seeing this in the top part of the website:

"); } else { win._boomrl = function() { bootstrap(); }; if (win.addEventListener) { win.addEventListener("load", win._boomrl, false); } else if (win.attachEvent) { win.attachEvent("onload", win._boomrl); } } doc.close(); } var link = document.createElement("link"); if (link.relList && typeof link.relList.supports === "function" && link.relList.supports("preload") && ("as" in link)) { window.BOOMR.snippetMethod = "p"; link.href = window.BOOMR.url; link.rel = "preload"; link.as = "script"; link.addEventListener("load", promote); link.addEventListener("error", function() { iframeLoader(true); }); setTimeout(function() { if (!promoted) { iframeLoader(true); } }, LOADER_TIMEOUT); BOOMR_lstart = new Date().getTime(); parentNode.appendChild(link); } else { iframeLoader(false); } function boomerangSaveLoadTime(e) { window.BOOMR_onload = (e && e.timeStamp) || new Date().getTime(); } if (window.addEventListener) { window.addEventListener("load", boomerangSaveLoadTime, false); } else if (window.attachEvent) { window.attachEvent("onload", boomerangSaveLoadTime); } if (document.addEventListener) { document.addEventListener("onBoomerangLoaded", function(e) { e.detail.BOOMR.init({ ResourceTiming: { enabled: true, trackedResourceTypes: ["script", "img", "css"] }, }); e.detail.BOOMR.t_end = new Date().getTime(); }); } else if (document.attachEvent) { document.attachEvent("onpropertychange", function(e) { if (!e) e=event; if (e.propertyName === "onBoomerangLoaded") { e.detail.BOOMR.init({ ResourceTiming: { enabled: true, trackedResourceTypes: ["script", "img", "css"] }, }); e.detail.BOOMR.t_end = new Date().getTime(); } }); } })();

please help.

Every time I open Firefox, it crashes immediately and does not trigger the crash report window. Even though I have checked and enabled the option to send crash reports in the settings, it doesn't work. When I look for crash report logs, it shows that I have not sent any crash reports.I've tried many methods to view the crash report, but it just shows that there are none. I only found this information related to crash reports in the installation files.(you can see it in the picture)，hope someone can answer this question, thank you very much.😭

duplicate of /questions/1446872 thread.

About tab crashes Every time I open Firefox, it crashes immediately and does not trigger the crash report window. Even though I have checked and enabled the option to send crash reports in the settings, it doesn't work. When I look for crash report logs, it shows that I have not sent any crash reports.I've tried many methods to view the crash report, but it just shows that there are none. I only found this information related to crash reports in the installation files.(you can see it in the picture)，hope someone can answer this question, thank you very much.😭

Trying to recover from a hard drive crash. Had to buy a new desktop with Windows 11 Pro (looking to be a bad move). I downloaded/updated to Firefox 126.0 (maybe also looking to be a bad move).

Have my last "working" userChrome file (it took me weeks to perfect this to my needs).

I am looking for: C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>\

but there is no "AppData" folder. And there is no existing userChrome.css file, anywhere!

Is the functionality I am looking for a thing of the past?

Is Firefox not completely supported by Windows 11?

If so, what is the last version of Firefox that will still support userChrome.css?

I added my own shortcuts and deleted all the preset ones (Wikipedia, Twitter, Amazon etc). On deleting the last one of the default ones, the 'Add a shortcut' button has completely disappeared. Is there another way to create a shortcut?

Locking this thread, please continue here: [/questions/1447949]
Every time I open Firefox, it crashes immediately and does not trigger the crash report window. Even though I have checked and enabled the option to send crash reports in the settings, it doesn't work. When I look for crash report logs, it shows that I have not sent any crash reports.I've tried many methods to view the crash report, but it just shows that there are none. I only found this information related to crash reports in the installation files.(you can see it in the picture)，hope someone can answer this question, thank you very much.😭

I have pictures that are slanted. Chrome, and Safari don't do this, so I know it is something with Firefox. Every once and awhile Firefox also has little square dots that appear s’ for ‘Firefox’

I must utilize a radiology based website application that works best in Firefox. I utilize 3 monitors on my system and have Firefox browser working on Monitor #3. Unfortunately Firefox opens the popup windows in Monitor #1. I cannot find a setting anywhere that would force it to open the popups on the monitor that is running the Firefox browser. I do not have this issue with Microsoft Edge, Google Chrome just this browser. I only use Firefox for this application because of this. However, I must use it 4-5 hours a day and this is extremely annoying. Is there any way to fix this issue? In today's technology and the fact that most of us use multiple monitors, I would think this browser would be up-to-date in its options and ability to handle this. Any help would be greatly appreciated.

Hi when i have to download my bios updates i am being forced to use misrosoft edge or chrome none of which i use , so the question is can i use firefox safely thanks . Lee

Tēnā koutou (Hello everyone),

I deleted Firefox to re-install it after playing with profiles and that not working how I wanted it to (yet). I uninstalled the app from the applications and the library on my Mac and reinstalled Firefox. Now when I open Firefox it says that it's up and running but no windows actually open up for me. I have uninstalled and reinstalled it again and it still won't open windows. I have to force quit Firefox as nothing shows up in my top tool bar to even show Firefox as open.

How can I get Firefox to actually install and be functioning on my computer again?

Running (as of an hour ago) macOS 14.5 (was using previous up to date OS when I installed Firefox again.

TIA