Firefox 技術支援討論區

To start off, I've never used the sync feature. Not that I think it won't work, I just haven't trusted the cloud enough yet. That being said, I know my logins and passwords are stored in the "profile" in the appdata of mozilla firefox, on this local computer. To my knowledge, this information is stored in the "logins.json" file located in my default profile. Up until now, I have had no issues retrieving the information I need. However, after this morning, when Version 81 was installed, I visited a website where I needed a particular login. I normally have Firefox automatically populate this information, on this particular site. However, since that did not happen this time, I checked my "logins and passwords" page, only to find "No logins found" on the sidebar, and "No synced logins found" in the main space, with instructions on how to sync from other devices or import from other browsers. Since I have not had a login before (for Firefox), I created an account to see if I could import the information from a previous version. However, only other browsers were listed, and I can't sync from another device, as the information is stored on this machine. Creating an account has also allowed me to post here...

I have opened the logins.json file with notepad, and the logins-backup.json file, and both are full of information. Of course it's not plain text, but the information is there. I can also open these files with Firefox, however, it doesn't recognize the file as the "logins and passwords" file, it just displays the encrypted information in a different (html?) format.

Any advice on how I can import these 55+ logins and passwords without re-creating or changing each one of them? Thanks.

I have been getting notification to update Firefox but every time I try, it won't work. I have tried from the menu. I have tried updating from mozilla.org. I have tried downloading a new copy. Either the download doesn't work or the execution doesn't work. I temporarily disabled my virus protection and firewall just in case, but that didn't help. My next thought was to delete the Firefox copy I have. But what if I continue to not be able to install? Can anyone help with something other than what the website suggests? Thank you!

I am using Firefox Browser V81.0 (64-bit) on MacOS Catalina and I'm experiencing issues with downloading files specifically from Google Drive. I can download other files using Firefox, but it doesn't work when using GDrive. I know it's an issue with Firefox because I've tried downloading the GDrive files using Safari and it's fine.

What happens is I'll click download and then there is no prompt that asks me if I'd like to download the file.

I also looked at this thread and followed the troubleshooting measures (including clearing the browser cache and starting Firefox in Safe Mode), but it did not solve the problem: [https://support.mozilla.org/en-US/que.../1157677]

I've also tried un-installing/re-installing Firefox. And I have my adblocker disabled for Google Drive.

Any suggestions for how to resolve the problem?

Reinstalled Firefox, still won't launch. Error message reads: Firefox can’t find the file at jar:file:///C:/Program Files/Mozilla Firefox/browser/omni.ja!/chrome/en-US/locale/branding/browserconfig.properties. Now what???

I have kept FF v. 56.0.2 because of certain add-ons that I have come to rely upon. That version is shared by all users. However, I would like to add the newest version for a second user. How can I install the current version for only the second user without affecting v 56.0.2 for the primary user?

Hi

I've just uninstalled Firefox as I somehow managed to have the beta version and the constant upgrades were driving me nuts. I now have 81.0 main version for Windows 10 64-bit. For many years I have kept my Profile folder on the D: drive for backup purposes. Having downgraded (by one version?) it won't let me use the old profile. Normally if I rebuild a PC or migrate, I edit %APPDATA%\Mozilla\Firefox\profiles.ini and point it to the profile on the D: drive but now I just get told to either create a new profile or exit.

How can I retrieve all my bookmarks, passwords and other preferences from my old profile?

Thanks John

I've just set up a brand new profile and copied all my important user data across, including the bookmarks (places.sqlite).

But now my bookmarks have no icons?

I have over 25,000 bookmarks so I don't want to have to load them all in order to get the icons back!

Reading the several comments on this subject has not led to a solution. The Firefox Setup 81 and Installer are sitting in the downloads file, but when I click either "Open" or "Run as Administrator" I get a Windows "For security and performance Windows 10 in S mode...." followed by two options "Learn more" or "Switch out of S mode". When I choose the latter the "Switch out of S mode" page arrives. Now what? Thanks.

I wanted to go back to 80 because I didn't like 81. When I dl'd & installed 80, it told me that I had to make a new profile, otherwise my bookmarks might be corrupted. I did that, but now all my bookmarks & extensions are gone. Help!!!

Ok, thanks, finally human help! I just had to change my pc and make a fresh install of the operating system. I used Linux mint on the last pc, and have Linux MX 18.3 on the new one, currently in use. I took the precaution of copying my Firefox and Thunderbird folders from the old hard drive, as I have several years worth of bookmarks organised in to folders, irreplaceable. This was the way I had preserved that information in previous changes, and swapping the old folders with those in a new install worked fine. But now i find the new version has changed and the files differ and cannot therefore be swapped. I don't really want to get into blaming or how disappointed and annoyed I am, as this won't be the fault of the person helping, and that is appreciated. But back ups need to be backwards compatible or there is no point? So, not sure which version I had, but will have been a couple of years old with updates. In my 'etc' folder there was a Firefox folder, and in that I have a folder marked pref. In that folder there is a file named apturl.js and I have saved those folders. With my new install there is not even a folder for 'firefox' in my 'etc' folder. How do I proceed to restore my bookmarks? If I need to install and older Firefox version I will do so. Many thanks, Tony

Trying to install Firefox browser in a different location. FireFox version 8.2 for Win 10 does not provide a dialogue box to select a different location. What am I missing?

I'm trying to upgrade from V52 ESR - kept for known and obvious reasons concerning addons compatibility - to a current V81. Copied the profile data from user/appdata/mozilla/firefox.../myprofile/*.* - including "key3.db" (in use), "key4.db" (don't know where this one originates from - shouldn't exist at all for versions < 57 or so) and "logins.json".

So far stumbled upon:

• No Logins in new system visible. No master password set. After setting a new master password, still no logins visible.
• This very forum here suggests - in many threads for version upgrades from somewhere in the 50s to up to the 70s - to simply copy the "key3.db" and "logins.json" and to delete the "key4.db" on the new system's profile. That does not change anything at all.

Am i forced to keep the V52, now not only by means of addons compatibility, but also by means of login manager compatibility?

What would the correct path to upgrade be? Would i have to install each and every in-between-version from 52 to 81 to be able to migrate? Will i run into the exact same trouble doing it that way, only burning daytime for nothing? Or is it guarantied to somehow get the logins data transfered to the current version? How did all the Millions of other users fare with that aspect? Is that an extremely rare case where users set a master password, so that developers decided to not care anymore about those nasty paranoids?

i am getting message from "performstrongintenselyapplication.icu" saying "important Firefox update available". Is this legitimate? ABOUT FIREFOX says I'm already using the most recent version (81.0.1, 64 bit)

Just a suggestion on getting update content information.

I do not enable automatic updates in order to maintain personal update control and to generally wait a few days to allow any bugs in the update to shake out [e.g 81.0.2 to fix the Twitter bug in 81.0.1 -- No biggie, small bugs can crop-up in any update in spite of Mozilla's commendable quality control]. When manually checking Firefox "About" to look at update status, the pop-up shows the current installed version, with a link to "What's new?" [Great idea, thanks]. Unfortunately, there is not a "What's new?" link beside the box to download a new update, thus one must do an on-line search for the related Release Note to determine the urgency/relevancy of doing the update.

Adding an additional "What's new?" would be an appreciated change -- Thanks and be well.

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,