Firefox-Hilfeforum

Hello,

I am trying to remove a profile from Firefox and this message is above the profile I want to delete.

This profile is in use in another application and it cannot be deleted.

I have searched the Mozilla support site and can't figure out what application is using that profile.

I'm using: Macbook Pro Mac OS Sonoma 14.0 Firefox v 126.0 (64-bit)

Please help! Thank you! Jordan

Whenever I use the picture in picture feature, it always opens up in a bigger tab instead of the floating PiP. I am unable to adjust the sizing whatsoever. Is there a way to get around that?

For a very long time I have been using Afterpay successfully through Firefox. Since the last update of Firefox a few days ago, Afterpay has been failing to complete transactions. This has occurred on 3 different sites. I contacted Afterpay and it appears everything is fine on their side. This morning, after another failure, I tried the same transaction through Chrome and it was successful. Paypal still works with Firefox without a problem but it seems there is a transaction glitch between Afterpay and this updated version of Firefox.

Earlier I tried to open firefox to go on the net and Bing came up. I uninstalled Firefox and reinstalled and the same happened. Then I deleted the Firefox folder fron the hard drive and then reinstalled Firefox again. This time it opened correctly. I can only assume but don't know, the Bing thing came about through one on the windows 11 updates. How can I stop this from re-occuring or can I? I only ever use Firefox, its just the best, thank you.

PS: I did have Firefox as my default browser but Firefox still became Bing. Lis

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 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!

Update: My computer is barely usable anymore because of the Firefox issue. Having to wait for a minute or more for everything I do on the internet? I know it cannot be my computer itself because it is not even two years old yet. I may have to dump Firefox if I cannot get this fixed. I have Norton 360 and it is not malware or a virus. Firefox messed something up.

whenever I am filling out an online form that requires basic info, Firefox prompts the common info that I have input in the past via the Auto-fill feature. Whenever I click on the suggested information, a new settings tab opens and switches my screen view to that tab. This didn't happen prior to the most recent update and has made filling out various forms extremely tedious and frustrating.

I have a fresh install of firefox on a fresh install of windows 11. I am trying to login to my dropbox account and when I get to the MFA page the "Continue" button does nothing.

There are no add-ins installed in firefox and I tried it in safe mode as well. I turned off enhanced tracking protection. The site works fine in firefox on another machine. It works in other browsers on the same machine.

Dropbox support seems to be unwilling to help, they just told me to use a different browser.

We use a firewall that doesn't support the ZSTD standard yet so I need the ability to turn it off on the Firefox browser. I haven't figured out how to do that yet since the new version came out with support for it this week. (We have turned it off for Chrome based browsers already.) It tends to break a few of hte websites we are using.

Thanks.

Since last "update" of Firefox for Windows v126.0

I can no longer access Gmail

keep getting this Error code: PR_END_OF_FILE_ERROR

can access my Gmail account on my phone using Firefox for iOS but not the laptop, what changed with the Firefox 126 update? what am I missing?

So I been using Firefox forever until February when I noticed that all my saved passwords were not available and I had to sign on to my account every-time I brought my laptop up. I tried everything i could think off or read but nothing works. I do shutdown my computer using Glary but I have turn off all cleaning of Firefox. I want to go back to Firefox but can't seem to get past signing on every-time to my account to get full access. Any thoughts on what I need to do?

I found a file that has an IP address at the top of it. And the IP address is from China. recently my email address showed up on dark web. Do you think It could be connected. and is hack?

Nuance Dragon 15, my speech to text software, periodically opens a window and says restore privileges to the Dragon web extension for Firefox to improve performance. However, the fix it button is inactive and Firefox has never seemed to have heard of this web extension and denies all knowledge of it so the cycle continues. Has anyone else encountered this novel issue, please?

This current version of Firefox (126.0) is preventing Yahoo! Comments from showing/displaying in ANY Yahoo! article. After I finished reading a Yahoo! article, the Yahoo! Comments is viewed but upon clicking on Comments, it just disappeared. It happens in any Yahoo! article with Comments. I used Safari to see if I experience similar issue but Safari is able to show/display Yahoo! Comments upon clicking on them. I have no other browser plug-in or app in Firefox preventing Yahoo! Comments from showing, it seems to be a Firefox JavaScript issue.

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?