Firefox Support Forum

I have had this issue before and uninstalling and reinstalling has fixed it in the past. Today when I opened firefox it prompted me to update , which I did without thinking. Subsequently, it stopped working. I have tried: restarting my PC, running in troubleshooting mode( it wouldn't even open when I tried this), uninstalling and reinstalling using the internet installer, uninstalling and reinstalling using the offline installer ( tried on multiple hard drives, so I don't think hardware failure is the issue), installing an older version of fire fox, and installing the 32 bit version instead of the 64 bit version. The attached images show what displays upon trying to launch firefox. nothing loads, not typing an address into the search bar, not clicking on a bookmark, the only UI element that will display is the 3 horizontal line setting menu.

Today using Firefox 93.0 on my Windows 10 home computer I opened the browser to my Audible library on Audible.com and selected a book to download. The browser download window opened with the book file name but the extension wasn't .AAX but had been changed to .MP4. This did not happen when I used Microsoft Edge nor did this happen on my Windows 10 laptop which was still running Firefox 92.0. Once Firefox upgraded to 93.0 on my laptop I now get the same problem as I get on my home computer.

Audible technical support looked into the problem and found that this change wasn't caused by their servers.

I have discovered that if I change the file extension from MP4 to AAX I can load the audible book into iTunes and sync it over to my iPhone which is able to play the file as an audible book. This indicates to me that the actual AAX file was not converted to MP4. For some reason only the file extension was changed.

I wasn't able to find any setting in the Firefox browser that corrected this problem.

Hi,

I have a fresh installation of my Macbook OS, and a fresh Mozilla Firefox installation. I would like to re-import my old passwords and log ins, but it seems that the new version of the browser doesn't have that option unfortunately. I can see only Import from Other Platforms options, but not import from file or similar.

I have .csv file, but no option of how to import in into my browser.

I would appreciate help on this one. Thank you in advance.

Sasha

Hello.

I have two profiles, for separating work and personal tabs/bookmarks/etc. I wanted to update Firefox from 95.0 to 95.0.1 but in both profiles I saw "Firefox is being updated by another instance" in the About Firefox dialog when both were running. So I closed one of them and the other offered me the usual button to update immediately. I did it, restarted that Firefox instance/profile, which restarted normally, but now the second one does not open. Instead, I get the error transcribed above in the subject (see attached screenshot).

So my question is: please, how do I regain access to my second profile without losing that profile's data?

On Win11, after I installed firefox on a custom location(like D:\Firefox), Firefox can not open any page, even its option page. If installing at the default location(C:\program files\), everything works fine. But custom location works On Win10. Firefox version: 95.0.1, x64

I reinstalled Firefox and now need to import passwords from file where they were exported before reinstall. This article https://support.mozilla.org/en-US/kb/import-login-data-file explains how to import passwords from file, but this option is missing. The only option available is Import from another browser.

From here https://bugzilla.mozilla.org/show_bug.cgi?id=1702336 it looks like the feature was disabled 9 months ago. It is not clear what is the workaround in interim and what is the current state of resolution. For example, how do I use passwords CSV file to load into Microsoft Edge or Chrome and then import this data from that browser back to FireFox?

Yesterday I received an update fot Firefox, previously FF 95.01. Now, in FF95.02 the Firefox start page is lost, and add-on` s don`t work anymore or are simply vanished. I want FF95.01 back, or a resonable update, like 96.

I'm trying to move my profile from an "old" laptop to a "new" laptop. I've copied the profile and put the files under a new profile which I generated with the profile manager on the "new" laptop. When I try to start firefox on the "new" laptop I get the Error Message "... your using old version ... this might corrupt your current data ... please create new profile" When I create a new profile (see above) I'm in a circle (catch 22 ;-))) When I click "close" no firefox opens.

"old" laptop runs Version 94.0.1 "new" laptop runs Version 93.0

Please send copy of answer to my email account

Cannot get rented/paid Youtube or Netflix video to run. Message "! Sorry, there was an error licensing this video" pops up onYoutube screen every time when hitting play button. "Free" Youtube videos work just fine, paid content gets this message. Have firefox-9.5.0.2.ta.bz2, use Linux updated software. Followed all previous suggested Support, cannot seem to find fixes that included DRM, Safemode switch, etc. Thanks for previous help, still stuck... anymore ideas appreciated. Also, difference between running "normal and beta", please explain, and how to know "differences?"

I moved my Firefox installation to a new machine. After creating a new profile and moving all my old files Firefox has opened with all of my old info and is operating properly.

But when I tried to change the location of the cache file to the correct drive on my new machine the about:config file does not save the new entry. When Firefox is closed and re-opened the new entry has been reset to the old location.

I've tried deleting the browser.cache.disk.parent_directory entry in about:config but when the program is re-opened the entry returns with the old directory shown.

Any advise would be appreciated.