Firefox Community Forum

Hello, I need help, it is not possible to open Firefox. After opening, the window closes itself again, a new profile was created, but the problem is still there. I am very unhappy about this. I didn't load a new extension, didn't use new antivirus software. Firefox has already been uninstalled and reinstalled. The problem is not solved. I've also cleaned Firefox a few times, but the problem still persists. There are no crash reports as Firefox just closes and doesn't crash. I can start safe mode. I am sending the Troubleshooting information.

Thanks for your help, Firefox is the best browser! Greetings Silke

Dear All:

Suddenly FF starts but shows only a new tab without any content. I can fill in a URL but no reaction. Settings doesn't open. Close tab through X Restart FF. no new tab but message: FF is already running but is not responding. The old FF process must be closed to open in a new window. Click to close. a new empty tab pops up without starting FF manually. Close through X Restart brings the same message as above - no window. Have to end FF in Task Manager.

Uninstalled and reinstalled three times - no change.

I'm using Windows 10 and Avast One, Firewall checked - is open for FF.

I appreciate your comments and help. Best wishes Henning

when i open a new tab i want it to go to https://uk.yahoo.com/. how can i achieve this please, as loosing the will to live. Many Thanks Steve

Dear Community,

I've been struggling with a very peculiar error with my Firefox in the last couple of weeks that I haven't managed to find a solution for. It's kinda disturbing and makes me want to stop using the whole thing, even though I'm a big fan of Firefox.

1.) The first sign of the error is the browser suddenly becoming partially unresponsive. The UI still works - as in, you can scroll down/up on open pages, navigate through menus, open/close tabs, etc. but no HTML content is loaded JS isn't running. First I thought this was just bad connection, but I had a stable internet connection and other browsers would load the same pages. 2.) At this point, when I try to close the whole app and restart it, I get a message that the browser is already running. The dialogue box also offers to force restart the app, which doesn't work (it stops the process but doesn't restart it, so I still have to manually launch the app). 3.) After manually launching after failed force restart, I'm getting another error message saying that I'm using an "old version of Firefox", due to which my old profile "might not work". I can either exit the app or create a new profile. From a new profile I can load profile manager but I'm unable to launch the other profile. However, indeed there is an app update pending. 4.) After the update is installed, the browser launches the new profile and and then from the profile manager I'm able to load the other profile, set is up as standard and remove all other profiles. After this step, all seems to be normal and Firefox keeps working without any issues until a next update is found, but then the whole issue starts from point 1.

First time I suspected that the profile is corrupted, so I deleted it and resynced the settings from my Firefox Account, but this has not helped, so I fully removed Firefox with all the data stored on the local drives and reinstalled it. Then the latest version was installed and the profile worked, so I presumed the issue to be resolved until a new update came. In the last month there's been at least 3-4 updates, all triggering this very peculiar issue issue. I was thinking this might be known so the devs would release a fix soon, but I couldn't find the same issue mentioned, so now I'm suspecting one of the add-ons acting up. However, since the issue only reproducible when an update is released, it would somewhat complicated and time-consuming to deduct which one is causing the error. Hence, asking question here as I'm wondering if anyone had encountered anything similar or could suggest any further steps to fix the error.

I'm using 104.0.2 (64-bit) and following add-ons:

   Dark

Extension ID

   firefox-compact-dark@mozilla.org

Internal UUID

   e19ebbac-c904-4833-9836-b34cd99aedf7

Manifest URL

   moz-extension://e19ebbac-c904-4833-9836-b34cd99aedf7/manifest.json

LeechBlock NG

Extension ID

   leechblockng@proginosko.com

Internal UUID

   fcae5d2b-d421-46db-b85f-bf4b01b74042

Manifest URL

   moz-extension://fcae5d2b-d421-46db-b85f-bf4b01b74042/manifest.json

HTTPS Everywhere

Extension ID

   https-everywhere@eff.org

Internal UUID

   ed95fe88-894b-4f71-b65f-d94ca39184d6

Manifest URL

   moz-extension://ed95fe88-894b-4f71-b65f-d94ca39184d6/manifest.json

Decentraleyes

Extension ID

   jid1-BoFifL9Vbdl2zQ@jetpack

Internal UUID

   249d0d84-b3f5-4682-9a07-2bd77246a6f7

Manifest URL

   moz-extension://249d0d84-b3f5-4682-9a07-2bd77246a6f7/manifest.json

Stylus

Extension ID

   {7a7a4a92-a2a0-41d1-9fd7-1e92480d612d}

Internal UUID

   fa3b5461-95c0-4472-9306-8428d080f931

Manifest URL

   moz-extension://fa3b5461-95c0-4472-9306-8428d080f931/manifest.json

Privacy Badger

Extension ID

   jid1-MnnxcxisBPnSXQ@jetpack

Internal UUID

   c69318fb-2a37-4c3c-abed-60758264c38d

Manifest URL

   moz-extension://c69318fb-2a37-4c3c-abed-60758264c38d/manifest.json

Cookie AutoDelete

Extension ID

   CookieAutoDelete@kennydo.com

Internal UUID

   c452aab0-c8bd-4336-81e3-9482d58fbde0

Manifest URL

   moz-extension://c452aab0-c8bd-4336-81e3-9482d58fbde0/manifest.json

Super Dark Mode

Extension ID

   {be3295c2-d576-4a7c-9987-a21844164dbb}

Internal UUID

   fd0ffaf5-043d-405c-872f-dbd547640b2e

Manifest URL

   moz-extension://fd0ffaf5-043d-405c-872f-dbd547640b2e/manifest.json

NoScript

Extension ID

   {73a6fe31-595d-460b-a920-fcc0f8843232}

Internal UUID

   492c4958-9f48-48fe-b927-c0259592f1ca

Manifest URL

   moz-extension://492c4958-9f48-48fe-b927-c0259592f1ca/manifest.json

uBlock Origin

Extension ID

   uBlock0@raymondhill.net

Internal UUID

   b73fc177-8d0f-4a6c-84b9-950e67c850a8

Manifest URL

   moz-extension://b73fc177-8d0f-4a6c-84b9-950e67c850a8/manifest.json

I haven't captured the exact error messages but I'm happy to do if that sheds some further light on the issue (would have to wait until next update for the issue to happen though). Any tips would be appreciated.

Running WIN10. I have used FF w Google for about 20 years, and always had new searches open in same window, new tab. Following recent refresh of FF, that seems to be not possible. Links open in new tab, but not searches. In about:config the browser.search.openintab setting is True

I have closed and reopened FF, and closed and reopened WIN10.

What might be over-riding this? Many thanks!

3 days ago I closed my main Firefox Windowby accident, while other windows were open. To restore, I just used the normal "recently closed windows" option and reopened my windows. Immediatly, all my tabs that were assigned to "Containers" were duplicated, and I lost the "Simple Tab Groups" order. For each tab on a container, a second was created without an assigned container. Fine, i thought, just closed 130 tabs that were unassigned, and moved them to the right Groups again. Next day, i open firefox, same thing. All tabs duplicated (but now on the proper groups). Closed 130 duplicated tabs and moved on. But I can't spend 5 minutes each day doing it! Testing more, I realized that every time I close and reopen Firefox, all the tabs assigned to a Container get a copy. If i close and reopen firefox 10 times, i will get 10 copies of all tabs, with no assigned containers to them, ending up with 1300 unnecessary tabs.

I just cant figure out how to fix it. Any advice?

Whenever I use the searchbar in the bookmarks manager, it always searches all of my bookmarks, but sometimes I might only want to search for that query within a specific folder. Is there any way to limit a bookmarks search to only a specific folder rather than the entirety of my bookmarks?

Preamble: for most of the day I have Firefox open with several tabs. For a specific project I want Firefox open with one tab showing a specific webpage. At the same time I don't want to delete the existing tabs in the existing instance of Firefox - I want to keep them running in the background. Question: how do I create a desktop shortcut which opens a new single instance of Firefox with a single tab showing a specific URL ?

I was getting an unspecified bug with Mozilla VPN that wouldn't let me launch it, update it, or sign out of it. I decided to uninstall and reinstall it. Uninstalling the VPN required me to close out of Firefox. I did so. When I relaunched it after the uninstall so I could go download the new VPN files, Firefox was still displaying the tab titles but nothing else, not even the urls of the pages. The entire browser was completely blank except for the tabs. No other pages are accessible either. I tried restarting the computer. It didn't work. I tried uninstalling Firefox, restarting the computer, and reinstalling Firefox. It didn't work. I tried a clean reinstall where I deleted every scrap of leftover data I could find. It didn't work. I got a VCRUNTIME140_1.DLL error during an install attempt, which I attempted to fix by updating Visual Studio as outlined here https://support.mozilla.org/en-US/questions/1352013 and that didn't fix it either.

I paid Firefox $28 for unmarked videos. Now the mark, the stamp in the corner of the video, is back. I would like my money back or the non-stamped videos back. Who do I see about that?

My muscle memory has me constantly clicking just slightly to the right of where the furthest right tab is. It feels weird stretching alllll the way right or alll the way left. I've tried both spots and it just feels unatural to me. Obvioulsy I'll get used to it after a while its just I'd like it to be back to where I'm used to it being.

The Aer LIngus website crashed earlier this month, but was reinstated shortly afterwards. But I am still unable to see it on Firefox, though have no problem on Opera. I get a message on Firefox: "To regain access, please make sure that cookies and JavaScript are enabled before reloading the page". But I didn't make make any changes to my Firefox settings so am at a loss. Help! Thanks.

Greetings. I have recently refreshed Firefox Nightly, and I'm wondering if the notes I took previously with the Firefox Notes addon can be retrieved anywhere on my computer. I still have the Old Firefox Data folder generated by the refresh, if that's any help.

Thank you kindly for your time.

Hello,

For about a week now, Facebook Messenger on desktop (on my profile page at facebook.com) will fail to load. If I click on "See all in Messenger" it will just load indefinitely and not redirect to the new page with all the messages.

I have not installed any new add-ons and Troubleshoot Mode has the exact same issue. A week ago everything was fine. It this a known issue with the latest update?

Is there something I can do?

Please don't tell me to reset firefox. Burning your house down for a minor inconvenience is not a solution. It's as unprofessional of an advice as all those "reinstall windows" tips for absolutely every singe issue. That's not advice, just lack of knowledge.

Hello, I know when I closed the firefox browser , I can reopen firefox browser and click "settings"-- " history" --" Restore previous session" to retrieve all the webpages I was viewing last time. but this time it seems I made a mistake . I closed the firefox browser in the beginning with many valuable webpage still opened, after I restart the firefox browser, I close the browser by accident without firstly reloading all the restore previous session . Then I have to open firefox brower again, and try to click "settings"-- " history" --" Restore previous session" to try to retrieve all the webpages I was viewing in the first time. but this time no previous session can be loaded. since those webpages I was viewing are important webpage I need to check, May someone tell me how to get those valuable webpage link again? I know I can try to find those webpage link slowly by checking all the history day by day. but honestly speaking, I have 15 around webpages in the firefox brower and some of them are viewed around 20 days or 30 days before . I haven't closed my firefox browser for almost 40 days so it will be very hard for me to search the history webpage to find out them one by one. I am not sure whether there are some tips to try to load the "restore previous session " again for the first firefox browser I closed.

I'm wondering where the buttons for extensions/add-ons have their locations stored? I.e. I might have a tab-renamer extension button on one row, and firefox relay, privacy mode, and adblocker on another row. Obviously what row and what positions in the row the buttons occupy(relative index perhaps) are stored, but where?

Today the autofill feature for passwords / username stopped working on Protonmail login. Windows 10. Specifically the username option. I have two accounts and formerly could select which account. Now i have to enter the username manually, however the password tab still works for password autofill / selection. This is the only site I am having this issue with.

Hello. My Windows 10 suddenly crashed, so I reinstalled on a new hard drive, with the latest version of Firefox. My old Firefox, was completely up to date but still used the Key3.db file for my saved logins, and it will not work with the newest version. I tried creating a new profile and pasting the logins.json and key3.db files, as suggested by an old Firefox KB article, but that doesn't work any more. Is there any way for me to get the saved logins out of the older JSON file with the Key3 file? I desperately need help with this, and would appreciate any that someone could give.

Regards, Brian Mercer.