منتدى دعم ”Firefox“

Hi, I can't install Firefox and I don't know what's going on here.

Yesterday I installed the latest version of Firefox and it worked fine. Then, I turned off the laptop and the next day when I was going to use Firefox, it didn't load any pages. Edge was working fine, Chrome was working fine, but Firefox was not working. Trying to fix the problem, I decided to uninstall Firefox and installing it again. In order to clean even more the previous installation, I even manually deleted the C:\Program Files\Mozilla Firefox folder to remove all possible traces. I restarted the laptop and downloaded again the Firefox installer. I don't know how, but the installer detected that I had already installed Firefox before. I unchecked restart Firefox and hit the button to continue with the installation. After this, was impossible to install Firefox again. I got a message saying that the installation cannot continue because the VCRUNTIME140_1.dll was not found. The message said that this problem can be fixed by reinstalling the program, but that is not true, everytime I try to reinstall it, I get again the VCRUNTIME140_1.dll error.

After this, the installation stops and the Firefox icon appears on the desktop, but it doesn't install properly the software and when I open it, I cannot browse the Internet.

Do you know what's going on here and how to solve this?

Cheers

Background: I'm currently tutoring full-time, and the site I use allows tutors to download the session afterward as a .zip folder. In the past this has been incredibly helpful, because it allows me to review my lessons and improve my planning.

Current Issue: For some reason Firefox now appears to be misinterpreting these ZIP files as PDFs. When I begin the download, Firefox gives me the option to either open (as PDF) in Firefox, or to download. At this point (before any download occurs) Firefox has already labeled the file as a PDF. If I open it in Firefox, obviously it doesn't work (being a .zip folder.) If I download it, Windows Explorer usually lets me explore it as a .zip folder, but recently, about 10% of the files I download (even if I never open them as a PDF) still download as a PDF and are therefore inaccessible.

Fixes: I've tried downloading instead of opening with Firefox. This works about 90-95% of the time; not sure what the issue is. I've tried re-assigning the file type in Windows Explorer, to no avail. I've adjusted Firefox preferences (from "always ask" to "use Windows Explorer.") I'm not sure this will help, but will try.

Any advice? I hate to sound fussy, but I'm pretty meticulous about saving my lessons and hate losing that much data on my students. While I can save each file independently, it takes much longer. Thank you!

Hello, I just restarted my PC after a Windows 10 update (Windows Update). Launching Firefox from the task bar no longer worked (link removed). So I launched Firefox from the start menu. A completely blank version of Firefox appeared on the screen, as if I had just installed it. No more favorites, no more extensions, no more customization. All Firefox installation files in the AppData directory are dated today. How can a Windows update remove a Firefox installation? Is it possible to recover favorites and bookmarks? Thank you for your answers. Regards,

I want to transfer the profile from an old PC running Windows 7 to a new PC running Windows 10. I've copied the old profile to a USB stick. After much searching I've found the profile created by the new installation, but it seems to appear in two folders: AppData/Roaming/Mozilla/Firefox/Profiles, and AppData/Local/Mozilla/Firefox/Profiles. Should I simply substitute the old profile for both instances of the new profile? NB This message is posted from a different platform (Mac) Thanks

I shut down my PC without closing the Firefox brower tabs and I started getting this message the next time I re-booted and tried to start Firefox. --- "Firefox is already running, but is not responding. The old Firefox process must be closed to open a new window." ---

I read thru the different support forums and tried various answers/suggestions - no luck. Bottom line, I have uninstalled the browser, deleted all the old Mozilla folders from the machine and downloaded the .exe to try to re-install the browser. However, the installation crashes at about 70% completion and I still get the message listed above. I am running on Windows 10 and the PC is up to date with all patches.

I would appreciate if anyone can help me figure this issue out.

I was gifted an Amazon Fire Tablet to use for an upcoming hospital/rehab stay. I use Firefox on my desktop and Android phone and want to use it on my tablet, but the Amazon store doesn't have the app. Not sure I trust the Amazon Silk browser, but I may have no choice. I am not a tech savvy person! I don't know the difference between a bit, byte, or buttercup. If there is a way to install and use Firefox on my tablet, and sync with other devices, I would like to do so. Please explain how to do it as though you are talking to a 6 year old (who probably knows more about this stuff than I do, anyway). Thanks. rennylloyd

Hi Team,

I want to disable to "You have chosen to open this file" dialog for zip files but i am not able to disable it.

I have looked for some solution in google search that did not help.

Please help me on this.

I’m running a windows 8.1 computer with several open tabs in my browser. This computer crashed and I can’t get back into windows to sync up (I’ve tried booting from various sources, automatic repair, etc. it just won’t boot up). I hope that I’ll be able to extract my important files from my hard drive. I’m setting up a new windows 10 computer. My question is, can I copy over a file from my old computer to my new computer that Firefox will recognize and open up the tabs that I was last working on from my old computer? I have not synced, but the last time that I was able to use my old computer I did close Firefox cleanly, and I was able to log off from windows with no serious issues. Hopefully there is a file that I can copy over which will simply allow me to continue working on my open tabs. Thanks in advance.

I downloaded and installed the firefox app and nothing happens. No menu. No tabs. The word "firefox" appears in the upper left corner of my screen and a "." appears under the app, indicating that it is open. The screen "blinked" momentarily when I opened the app. I am a longtime user of Firefox and this same thing happened this morning when I opened the app, which I uninstalled, and then downloaded and installed this new app. Same problem.

Every time I try to open Firefox it asks me for permission to install Firefox Software Updater. I then say no and Firefox opens with a notification to update to the latest version. I opted out from updates but the only option available is for the Firefox to ask before updating, there is no option to opt out definitively. Is there any solution to stop notifications and installing attempts?

Thanks in advance

I have a Win7 machine, and just bought a new Win10 desktop. I followed some instructions from a YouTube solution. From the Help>Troubleshoot>Profile Folder, I copied the profile folder (onto an external drive) and pasted it (from the external drive) onto the new OS(C:) as per instructions.

It did not work, I do not have all my bookmarks and extensions, etc. on the new Firefox browser I have installed on my new machine.

I don't know what to do now. All that was selected and overwritten is still selected on "This PC>OS(C:)" I was tempted to just delete all that shows selected...maybe not a good idea.

I really just wanted to migrate all my bookmarks, but doing the full profile folder seemed like a good idea at the time.... Help Mr. Wizard?!!

When I try to open Firefox on Debian Linux I get an XPCOM error XPCOMGlueLoad error for file /mnt/chromeos/removable/plus_slim/dev/linux/packages/firefox-87.0/firefox/libxul.so: libdbus-glib-1.so.2: cannot open shared object file: No such file or directory Couldn't load XPCOM.

I included a screenshot of the message and my firefox file directory

I realize that you all don't support the older version. Yet it's also the case that Apple won't update this El Capitan on my 2008 model (terrible, a crying shame, I know).

I've also tried to install your Extended Support Release. Will that work? I'm an independent research scholar, not currently associated with either Oxford or Stanford.

So I really need to have your Firefox back — I had it until this morning, when I needed to trash it (b/c of a bug), and then re-install. Yet I've not been able to re-install so far.

Hence, I'm seeking your help!

Thank you, Davy

So recently my Firefox crashed (as it does sometimes when I sort my bookmarks) and I accidentally clicked refresh Firefox, thinking that it would just refresh everything like a restart does. Instead, it deleted everything - my logins, my cookies, my extensions - and I don't know how to get it back. I tried looking online for the answers, but none of the solutions I found worked (https://support.mozilla.org/en-US/questions/1195682 was the closest one that had some semblance of sanity) and the closest I figured was that I needed to either create a new profile with different settings I could import from my Old Firefox Data or put the Old Firefox Data in the Profiles folder which doesn't seem to be working, as there are always two other folders within. I tried creating new profiles with the Old Firefox Data as the basis, yet it doesn't work. In addition, I like my old profile and don't exactly want to switch, although if that is the cost of retrieving my data, I will take it. Any solutions please? I rely on my computer quite often, and I don't want to be handicapped for a while. My computer is also the recent updated Mac version, if that helps.

The latest update has made it so Firefox opens the download panel every time I download something, a very obnoxious behavior when downloading a lot of files, and I can't find a way to stop that from happening.

[came across another question that brings up the same issue], but that one focuses more on a site presumably changing about:config rather than the issue of the download panel itself.

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?

This issue is occuring for couple weeks now. When i click download nothing happenes. No matter what i try to download, it wont work. I do my downloads in another browser :D Why is that happening? I did reset firefox by the way and there were couple downloads and then it broke again. I have this add on saves backup automaticly and here we can see there is something wrong because it cant save the file.

I'm trying to import logins and passwords from my old computer to the new one. It showed up as a JSON file and I converted it to CSV, but can't load it onto Mozilla. The "how-to" article says the Import From Files option had a bug and now what can I do?

Anyone know if there is a way to import Google Chrome extensions into Firefox. I am moving over and want to make it easy. When I search all I get is bookmarks which I know how to do.

TIA!

Ron