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When i upgraded Firefox my old profile doesn't show up now. I found my old profile under about:profiles but when i click on the Launch profile in new browser i get this message, "You've launched an older version of Firefox. Using an older version of Firefox can corrupt bookmarks and browsing history already saved to an existing Firefox profile. To protect your information, create a new profile for this installation of Firefox" I did create a new profile but how do i get my old saved data, add ons etc to the new profile?

Every other day, I open FireFox and may get the following error: XULRunner - This profile was last used with a newer version of this application. Please create a new profile. Also, this error may come up while I already have had FireFox open for a while. Once this error comes up, I check the version, and sometimes the version is older than what it was, meaning, FireFox reverted back to an older version on it's own. I created a new profile, but the error comes back. I removed FireFox and all folders, and the error still comes back. There is nothing I can do to stop the error from showing up again. See attached images. I am on Windows 11 23H2, all windows updates caught up, and the current FireFox browser version is 138.03.

Darling team the Firefox.

I returned to Firefox again years ago, having stopped using the splendid browser. But due to fashion or following trends, I migrated to a browser from another company. I've returned to my beloved Firefox, which has brought me so much joy. However top me with a terrible unknown.

The browser I stopped using. It has an attractive simple, and useful home screen for selecting accounts for the user, which multiple accounts.

I haven't found any similarity in my dear Firefox.

Do you have a feasible solution, since searching the internet, the community is clamoring for it.

Sincerely,

Twö

Have had lots of problems with ffox. everything was ok, until i had a HD failure, and needed to change /update Windows 11 info.

1) I had a dual login setup (for two different id's) selected at startup. I now have about 10 different '.default' directories I am attempting to recover.

a) is there a place in the backup (default) directories that will show me the name of the acccount i was using? b) is there a way to put a comment in the (new directories) I will be re-creating? c) is there a way to put the new profile in a different spot (instead of (example: %APPDATA%\Mozilla\Firefox\Profiles\) perhaps something like %APPDATA%\Mozilla\Firefox\Profiles\user1 instead??

very time consuming and difficult. I am using the directory dates to try and find the best one... thanks in advance

Recovered files and data from a failed M.2 SSD onto a USB. Did a clean install including reinstallation of Firefox on the failed machine. How do I recover the Firefox profile from the recovery USB so it can be transferred onto the restored machine?

I had to do a clean reinstall of MacOS. I've copied my old profile info from Time Machine to /[user]/Library/Application Support/Firefox/Profiles, but when I open Firefox, it doesn't find the data. What am I doing wrong?

I just tried creating a new profile in Nightly, and I received the "Approve sign-in to Firefox" email with a code, twice, but the profile page kept saying that my email bounced or something. Now it's saying it's locked.

Hi all, I used to run two Firefox instances on the same computer, each one using a different account (as I mentioned in the Subject), but I don't remember how I managed this, so now that I moved to a new computer I can't reproduce it! Thanks for helping, if anyone knows. Regards, Mike

Why am I getting this message, when trying to save to pockets: It looks like you were misusing this feature by going too fast. You’ve been temporarily blocked from using it. Back

I am tired of this bullshit.

So i was using the beta branch of the firefox and beta version stopped working with a site for some time. so i tried to come back to the stable version.

After i do that and fix my config. In every couple of hours there would be a notification window pop up with sound saying this

"firefox this profile was last used with a newer version of this application. Please create a new profile"

So i did create a new profile BUT i copy pasted my own configuration.UI stuff from my old settings from "About:config"

This notification STILL comes up FFS what do i need to do then?

HOW COME MY UI CONFIGURATION TRIGGERS THE DAMN NOTIFICATION?

I will not re-do my fckng UI configuration by hand.

So I have a bunch of Firefox profiles I want to set up a new profile and I want to set up the profile switching with in that profile perhaps by creating a bunch of profiles from the about profiles page and then replacing those profiles with the old ones as I don't see a way to just import old profiles in the UI. How do I go bout doing that like copy and move exactly what exactly where.

Since the new "feature" profiles came out, I now always have this "originalprofile" in the browser (in the title bar) and in the Windows taskbar... It's really annoying.... Now my question is, how do I get rid of it again... on 3 more pictures, Firefox language is German...

Fire Fox - This profile was last used with a newer version of this App - Create a new profile.

After logging into my account, I saw a Fire Fox page showing new features. Upon downloading Fire Fox, I saw the the above message. I didn't want a new profile, but there wasn't an option to close the window and to just continue to use the newer version that was already installed ???

I tried Control / ALT / Delete . Upon restarting it showed the same message! I uninstalled Fire Fox, which surely has not helped things.

Am I able to restore the profile from the "newer version"? Otherwise, I will probably have to setup Fire Fox from scratch and have lost all bookmarks.

Thanks so much for your assistance. Myles