Firefox 社群討論區

When having restarted my computer and Firefox Nightly after a sudden power outage, all my tabs were gone. I need to restore them.

I went into the profile folder, but there was no session store file. Inside the backup sub folder i saw two large files, "previous.jsonlz4" and "restore.jsonlz4", and made a copy of both and placed them inside a new sub folder that I made, inside that profile folder.

An expert from the "Tech Support Guy" website ("Nader") told me, to open "about:support" and there to use the "Refresh" feature. I did this, but no tabs were restored. So I went into the profile folder again, just to see that it had disappeared and been replaced by a new profile folder! And therefore my two copies of the PREVIOS and RESTORE json files were gone, too, as they were inside a sub folder within that disappeared profile folder!

Now I need to know, URGENTLY, how to restore that folder and the files and sub folders within that profile folder. Thanks!

Backed up Thunderbird, with no issues, to external hard drive. Attempted same with Firefox but copy did not take place. Upon next boot for Firefox the system flagged "Your Firefox profile cannot be loaded. It may be missing or inaccessible" I have appended OLD to the original profile and created a new folder. Firefox now loads and operates. Could you please advise the best way to retrieve my OLD profile.

Many thanks

Is there a way for me to get firefox to save bookmarks to the top of a folder? I'm currently trying to switch over from Opera GX but I've really gotten used to new bookmarks saving to the top of a folder, and with some particularly large folders it's much nicer to have it at the top instead of having to scroll all the way down. I did come across some sorting extensions, but didn't automatically put it at the top. or sorted all my bookmarks by date added. which is also not what i want, because i also manually move things around.

I reinstalled windows yesterday. When I installed firefox and signed it, everything was fine. However, this morning, it seems to have removed 80% of my bookmarks. When I try to restore from the bookmarks yesterday, it just gives me the ones that I have this morning. I had tons and tons of resource bookmarks for my work that would be almost impossible to re-find in some cases due to the current state of search engines. Is there any way to salvage them? It seems like sync believes they never existed, but it DID sync them yesterday??? Please help.

Hi, I have multiple devices using firefox , all these apps have around 500 tabs open in background, they are listed in firefox's tabs from other devices on my pc but I want to save or backup them to the disk on my pc what is the workaround for it ?

When I open the Manage Bookmarks --> Import Bookmarks --> Browse I have no listed backups, even though I can see them in File Manager \AppData\Roaming\Mozilla\Firefox\Profiles\c4i4a2zg.default\bookmarkbackups folder. I have copied the JSON file from my laptop which has not lost them but cannot select a folder/file location to import them, same for doing it via a HTML file.

I am stuck, thinking I may have to uninstall and then reinstall Firefox and then sync again.

Hi! I need some troubleshooting help. Idk what happened, but I think it was a syncing issue in between the two browsers. I just plan on using just Firefox to hopefully prevent this bug in the future.

I originally have bookmark folders on my toolbar, but when I checked, the old folders were gone. Though everything in them was still in my toolbar, so it's a reaaally long "Show more bookmarks" drop down list. But when I check "Manage Bookmarks", the folders are still there. I tried exporting and re-importing the bookmarks but it didn't work. Here are some screenshots attached. Help?

Edit: After checking, it turns out my "manage bookmars" and toolbar are the same. My folders and bookmarks are there, but for some reason the contents are outside the folders. Is there a fix for this and how to prevent it?

With regard to the instructions at:

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles#w_restore-to-a-different-location

I'll be moving from an old Windows 10 machine to a new Windows 11 machine. Does that count as "a different location",

...or does "a different location" refer simply to a nonstandard path?

I plan to put the data in the default location on the new machine.