Firefox Support Forum

I used profile manager and copied my profile (C drive) to a different directory (D). Profile even has same name. And is same size. Yet all bookmarks and add ons are gone. They remain in original C drive profile and that works fine if I default to it. But if I make the D Drive profile the default it looks like a new profile with no existing bookmarks/add ons. Why doesn't this data move across to?

DuckDuckGo has bad habit of every now and then asking me to Download privacy essentials again. It's a big ugly add. Couldn't stand to see it. So I uninstalled DuckDuckGo as search engine. Selected Bing as search engine. Shut down my computer. Restarted. And DuckDuckGo still appears as search engine, even though in Options/Search I have clicked Bing as my search engine. How do I get rid of DuckDuckGo once and for all?

i cant download and install addons from third party websites like sticky password and alexa and real debrid etc.....

this message shows up

"this addon could not be downloaded because of a connection failure"

i did reinstall firefox without any success

Firefox initially popped open a window stating that I already had another copy open and so wouldn't open. After some investigating, I found a fix and followed the steps to delete profiles - possibly the cause of the errors. (I had applied this solution once months ago and it had worked then.) Subsequent to this attempt, I was unable to open Firefox - even with the creation of new profile(s). Given the situation, I deleted Firefox entirely by dragging into Trash and emptying the trash and re-logging in. Downloaded a clean new install from the Mozilla website. Although the DMG file downloaded fine, when I attempt to copy app to Applications folder, the system hangs. So now there is no way to re-install Firefox?!

This link /post seems to reflect my condition: https://support.mozilla.org/bm/questions/1240427 However at the given location on my computer, I only had a FB video plugin - even after i deleted that, there is no change, i.e. remain unable to implement a fresh new install of Firefox.

Suggestions? Thanks! RT12

p.s. Using a different computer to post this. When I get a chance, I'll go back to the one with this issue and see if I can post the "troubleshooting information".

I read the recommended articles for this problem on the Firefox website and deleted the files: Delete the following files: extensions.sqlite , extensions.sqlite-journal , extensions.ini , extensions.json and Restarted Firefox. That didn't work. I also turned everything in Bitdefender off and tried to install the update, but that didn't work either. The Notice says: Firefox update Important Firefox update available. Click "Install" to continue. Program firefox.exe Verified Publisher: Flash Player Necessary measures: Now click on “Continue to Installation ” and then on “Add” to complete the process. See attached screeshot When I click on Install a window comes up that says: "Allow newsoftware-update.com to install an add-on?" When I click on "Continue to Installation" the window that says "The add-on could not be downloaded because of a connection failure" appears. See attached screenshot. So far I have not been able to get past that. Please help. Thanks

duplicate of https://support.mozilla.org/en-US/questions/1278992

New update has completely ruined my browsing. Completely changed everything and removed all my saved data, a lot of links to websites, saved passwords and everything else just gone after an update I didn’t accept or get asked for. How the hell do I get my old information back. I don’t even know if my account was through this accounts email or not. It’s really pissed me off

This is my situation: I have folder with old Firefox 66 (?) from mint 17.3 /home/sylvester/Desktop/mwad0hks.default bookmarkbackups, browser-extension-data, crashes,… (containing 99 items),… I want to reach them to my new installation mint 19.3 Firefox Version 72.0.2 (32-bit) I want to know - what I need to know? in order to reach and restore old shebang in new browser (which file to open with witch program?)

The 64-bit Windows ESR download link is no longer working.

https://mozilla.box.com/s/5uvc1hjsimtx3wvs9qdpbda47h2tix5c https://www.mozilla.org/en-US/firefox/enterprise/#download

Usually when i clicked on pdf files, they would open in a new tab where i could view them. More recently, it would always ask what to do with the pdf file. Today when i clicked on a pdf file, it asked me again, but when i clicked to open with firefox it just started to open 90+ new blank tabs, untill i forcefully shut down firefox. Up untill today i didn't change the my firefox options, but it just started changing the way it reacts with pdf files. Today i tried changing the files and aplications options to preview in firefox (i read in some firefox articles that this option was suposed to be the one i used to have), but it would still ask what to do with the file, but when i clicked to open in firefox, it would also download. I then changed to open with firefox in the options, but it would just open 90+ new blank tabs. If i tried to always ask (which i find very annoying, considering i spent +1 year without it always asking), it would also download even if i specified not to download but instead open in firefox. When all failed i tried to reset all firefox options, but thje same problems still happened, after that i updated firefox (something i did for the first time), but still the same.

Firefox did an automatic update and totalled my old Firefox, or so I thought. I deleted Old Firefox. I downloaded new Firefox. Old Firefox reappeared with bookmarks, but New Firefox also appeared without bookmarks. I am completely mystified as to what I should do. Delete new Firefox and continue to use old Firefox? Or is there some way to install new Firefox and keep my old bookmarks on which I rely? I find this unfortunate migration disturbing and am wondering what went wrong and what else is wrong with new Firefox and the migration process. Thanks to anyone who can help me on this.

Every morning, when I first turn on my computer, I a have to spend the first 5 minutes setting up my Firefox again because of a "new profile". I have to re-enable all of my add-ons and configure them as well. Why does this happen every single day and is there a way to prevent it? If not, then I'm done with this browser...such a colossal waste of time for something that I shouldn't have to do. I don't have to completely set up Chrome or Edge if they do an update...all of the pertinent stuff is brought forward.

There needs to be a way for users to revert to the previously installed version of FF with all add-ons, settings, etc. restored completedly the way they were before the upgrade trashed all customization or deleted/disabled all add-ons.

When an upgrade is available and I try it, I always(?) get a message saying that the Firefox Upgrade failed and that I should download and install the latest copy. Can you guess why I now know to avoid that suggestion?

It takes way too much time to tweak the configuration of a frequently used program such as a Web broswer only to have the whole damn thing revert to stock settings whenever an upgrade comes along.

I can see why many settings or installed add-ons might not work if a particular upgrade involved many significant changes to FF, but users should be given the choice of not upgrading and never Syncing Firefox until they are sure that all the perceived bugs in the upgrade that break things they like as-is I like are fixed and that Syncing will not do more harm than good from their perspective.

Newer or allegedly "improved" is not automatically better in the eues of the owner/user. Just look at the millions of people who have avoided downgrading their Windows 7 or 8 installtions to Windows 10. The latter seems even more defective by design.

Why cannot FF be upgraded without breaking much of what users found good in the previous version, often due to their customizations? I wonder if the upgrades could be done on a feature/function basis in most cases. I certainly understand why the upgrade to FF Quantum had to be an all or nothing procedure...but EVERY upgrade since then?!?

Regards, TMG

I was asked to update to the latest Firefox . Now It no longer allows me to access the internet ( My other browsers allowed me access to internet) and all I get is a blank white page. Did a reset but no use so I uninstalled and re installed Firefox. Now at the end of the installation process all I get is error code Oxc 0000005. I have then removed my anti virus in case that was not allowing Firefox to work and then uninstalled and re installed Firefox but I still get the same error code Oxc0000005. Windows 10 is up to date and Suggestions please

Too many functions have been lost. I have a more up to date laptop but I'm not going to update the OS on my main desktop computer because too many other software programs would need to be updated - such as video editing and Adobe programs - which work fine as they are. Sadly my browser in future will have to be Safari or Chrome, which work fine with the current OS.

Mozilla Fire Fox stopped working, upgrade(s), add ons - unknown!. On launch ==> "Do you want to allow this app to make changes to your device?" Yes box rolls over and ask the same question again - ad infinitum ! Complete Uninstalled and re-installation (latest version) made no difference Recommendations?

After doing an auto upgrade to Rel 73, firefox started but no windows would load., I uninstalled firefox and went to the Mozilla site and did a re-install. After the reinstall when I click on finish to start the program I get the following

firefox.exe - Application Error. The application was unable to start correctly (oxc0000005)

NOTE: I am running this browser on a second computer that Firefox is working OK on.

The machine I am trying to get Firefox working on is Windows 10 pro Dell 8390.

I have uninstalled and reinstalled. I get a message when re-installing that the application failed to start and in error code (0xc0000005). The app appears to load OK, but displays an empty page. Selecting other links causes the address for the link to appear in the address box, but nothing loads. I am pretty sure that I am installing v73, but couldn't find the about window to know for sure.