Firefox Community Forum

I was interested in seeing how the profiles worked so I clicked yes to creating one, but once I set another one up I realised I would have to use a separate Mozilla account on it and I would prefer to keep everything on one browser and account. I tried to delete the profiles but it said it would delete all my bookmarks and data, is there any other way to hit undo or something and go back to the way it was before (without profiles)?

I switched to Firefox a few months ago and I've been using the "about:profiles" page to mimic chrome's profile feature. I have 3 profiles, each with their own Mozilla account. How can I migrate these to the new profiles system?

When I do try to create, rename or delete a profile, I get the message, "An unexpected error has prevented your changes from being saved".

I have a new Windows 11 PC. I installed Firefox first from the Windows store and had problems adding a second profile. Now, I've downloaded the full installer and still have the problem after multiple uninstalls, deleting the appdata Firefox folder and re-installing. I've also tried to rename the FF folder after encountering the problem and just restarting FF. It seems to create a new folder with profiles, but I can't create or delete the profiles from the profile manager or from about:profiles.

I've also checked that the folders and profiles.ini are not in read-only. I've also tried to manually create profiles or create profiles using the command prompt. Nothing seems to work.

I'm running Firefox 122.0.1 on a Windows 10 desktop PC, with a profile which includes a userChrome.css file which makes several layout and cosmetic changes.

I also have a laptop (also Windows 10) which has an old Firefox 97.0.1 installation, and I'd like to make the same changes on this machine which I'm used to on the main computer. I copied my desktop profile to the laptop, to the same directory as its present profile, but when I rebooted Firefox the transferred profile wasn't recognised.

While doing the transfer I received error messages about some of the folders: Destination path too long. This despite the fact that the registry flag to accept extended paths is set to 1. I had to skip several folders in order to complete the transfer.

Could this be the reason why the new profile isn't being picked up? Or is it because the two Firefoxes are of different versions?

I'd be grateful for any thoughts. Many thanks.

I am currently using FF v133.0 and I want to downgrade to v130.0. I tried this once before and could not get the 'Profile' to activate and reinstall all of my settings, bookmarks, add-ons, etc.

Please provide step-by-step instructions for doing this. Any assistance will be greatly appreciated.

I am using Windows 10 64 bit.

Thank you.

I have an account with Chewy. When I try to access the link to "My Pet" I receive this message:

400 Bad request Your browser sent an invalid request.

I don't understand why or how to correct it.

My account was probably hacked. I noticed this from an email I received from Mozilla. My account was logged in from Africa, which i noticed from the timezone because the email gives literally no detail. I logged into my account to kick them out but i found out i couldnt because the button didnt work. All the other kick buttons worked except the hackers. Mozilla has done nothing other than to email me.

when I start firefox, it tells me the old one is running and to close it. i hit the close button and keep getting the same message. I have uninstalled firefox and reinstalled it and keep getting the same problem.

Why is my browser stating that it is managed by my organisation.

I have never used it fr work and it is my personal laptop. Please kindly provide steps to remove this

Good morning, after today's FF update - right click dropdown menus are terrible! Nothing works for me... Opening new windows, new tabs, adding to bookmarks, copying, pasting, etc... How can I turn it off because I can't use it. I need to have a menu like in version 133.0.3. If I can't change it, I will have to change the browser because I can't use it! Thanks for your answer and best regards! Arthur

I am a heavy Firefox user, and have been using it (and its predecessor) since Netscape. In the last year, the size of my Firefox profile has more than doubled, from 500MB to 1.3GB. What's the probable cause(s), and what can I do about it?

I am an academic. I use Canvas. When I am in Canvas and I try to open a document in it from Firefox, what I get are solid black pages. I do not have this problem with Canvas in Chrome or in Edge. I really don't want to use those Browsers. I actually have this problem with every PDF I try to open from all sites. This is a recent problem. But if I cannot correct it, I will have to use other Browsers.

E. Wray Bryant, Ph.D. [edited email from community support forum]

I got a Firefox update recently and have not been able to access Flickr since then. I am getting a message that the page is not redirecting correctly. I am attaching the error message. I am running with standard firefox protection. I have cleared cache and cookies. I have also added Flickr as an exception to Firefox enhanced privacy tracking. Firefox is up to date (version 134.0.1 (64 bit)). Anyone else having this issue or know the solution?

Suddenly I cannot access one of my email providers [tutanota.com] because, so its error message says, javascript is not enabled my browser [Firefox is my default browser]. BUT javascript is enabled. [I just checked through taking the steps 1) typing "about:config" in Firefox; 2) clicking "accept risk and proceed"; 3) typing "javaScript" in the select preferences name box; 4) looking at the javascript line for "true" or "false".] Javascript was "true". Help. Please advise.