Sorry to hear. See if there is a Folder on the Desk Top called OldFirefoxProfile yes, is ok, no well we are working on it with you.

• https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data
• https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile
• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Fyi fo future :

• https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

Once recover please check by going to the Firefox 3 Bar Menu --> Options --> Privacy & Security panel and under Permissions check (put a tick in the box) the setting to Prevent Accessibility Services from accessing your browser.

Monitor in Task Manager. Should stay below 2 gigs. If excessive then do below and monitor and change if need to...Test and go up again , go back down, it will eventually get a zone you and it can live with. (Note : Hardware Acceleration id for your Video Card, Monitor for video issues after and turn back on if need be. Update Video Card Drivers)

Go to the 3 Bar Menu then Options --> General --> Performance and untick everything. change the recommended size lower then see how it runs. Note: 1 = No Multiprocessor = slow again. Try 2 Restart Firefox after making these changes please.

Please let us know if this solved your issue or if need further assistance.

Deksinjo said

Like headline say, it's new year... also happy to you but I'm just started angry ! Couple time power is off, start system normally but look like is windows restore is kick in, my FF is set only to notify me about upgrade but after last power lost he start automatic update to 57.0.3 , try to go in FB no password, same for google, go to FF sync is say I'm disconnected, connect and now no passwords...  ?! Where I can see my password, how to sync back them to my FF, WTF is going on ? And have focking happy NY !

Again me, try to restore bookmark from last night hoping this will fix problem now I lost ALL my bookmarks !

WTF is going on Mozila ?!?!?!

Can't restore data ? What is going on with this FF ?

Did the computer suffer from loss of power? In that case, files can be corrupted.

Perform a System File Check to fix corrupted system files

Win 7, 8, 10, Vista: https://support.microsoft.com/en-us/kb/929833 Win XP: https://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/system_file_checker.mspx?mfr=true

Wiki - Windows 10 System File Check http://answers.microsoft.com/en-us/windows/wiki/windows_10-update/system-file-check-sfc-scan-and-repair-system-files/bc609315-da1f-4775-812c-695b60477a93

Separate Security Issue: Update your Flash Player Note: Windows users should download the ActiveX for Internet Explorer. and the plugin for Plugin-based browsers (like Firefox).

Note: Windows 8 and Windows 10 have built-in flash players and Adobe will cause a conflict. Install the plugin only. Not the ActiveX.

Flash Player Version: Version 28.0.0.126

https://get.adobe.com/flashplayer/ Direct link scans current system and browser Note: Other software is offered in the download. <Windows Only>

https://get.adobe.com/flashplayer/otherversions/ Step 1: Select Operating System Step 2: Select A Version (Firefox, Win IE . . . .) Note: Other software is offered in the download. <Windows Only> +++++++++++++++++++ See if there are updates for your graphics drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration

In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password.

[Profanity removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

I solve my problem with this FF stuff ! My advice people , Downgrade FF to 56 version 32bit or 64 bit depend of your system , go to file hippo , best free base of older software. Take from another your computer bookmarks trough FF tools trough Bookmarks>show all bookmarks>import and backup>export to html ...then save on USB memory Password save with Passsword Expert addeon from FF store to USB memory also and that is that ! Load from usb memory in revers process. Stay away from FF 57.0.3 it will make only trouble and non working addeon !

[Profanity removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

Deksinjo said

[Profanity removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

You may want to apologize to Fred, who's only been trying to help you, as a volunteer, in his spare time. A little appreciation and gratitude wouldn't go amiss.

Are you by any chance using the RoboForm Password Manager extension  ?

If so : would you disable it and see if that will make a difference  ?

Deksinjo said

[Profanity removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

That's because most of the time it is the right answer.

Hi Deksinjo,
Are you saying that the older version could import your bookmarks, where the newer version did not?

Chris Ilias said

Hi Deksinjo,
Are you saying that the older version could import your bookmarks, where the newer version did not?

Yes, with older version I upload newer bookmarks (after solving problem) look like all older bookmarks have some corrupted problem, save one for try to found error later (made 1 day before error). After 56 version update FF stop to support some adeon what I use and with this error definitely will stay with 56 .

FredMcD said

Deksinjo said

[Profanity removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

That's because most of the time it is the right answer.

No is not, you just go around and give people same trouble guide man, this is not same problem like other. Only Pkshadow is give me right input what I looking for , where to fix, thanks for them.

@ Deksinjo :

You haven't answered my question about the RoboForm Password manager extension ...... (?)

Happy112 said

Deksinjo said

[Profanity removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

You may want to apologize to Fred, who's only been trying to help you, as a volunteer, in his spare time. A little appreciation and gratitude wouldn't go amiss.

Man just go around and try with same fix to solve all problem, there is no universal solution to fix and FP don't have nothing with passwords.

Happy112 said

@ Deksinjo : You haven't answered my question about the RoboForm Password manager extension ...... (?)

No last year I only use FF sync option, think that there product will work best with there browser across all platform but look like made mistake. Before that I use Xmark Bookmark Sync and it's work ok until don't know when Mozila stop to support it and think that Xmarks don't have Android apk. It's stupid to FF don't have option to save passwords to some other type file or just export in any form to make safe if something like this happen.

P.S. For import password from other sync PC I use Password Exporter but you know that FF57 not support him, so that is one more reason to stay with FF56

After downloading Firefox Quantum, I had to sign in to FF Sync to get back all my Settings. That's all that was needed, and it's all good now.

What are you seeing when you Sign In to Sync?

If you lost both your passwords and bookmarks, it sounds like Firefox created a new user profile. In some cases, the old profile is still there, and it was just an issue of the new version finding it.

Go to Help > Troubleshooting Information, then click on Open Folder. That will open Windows Explorer in your Firefox profile.

Then go up one level. Are there any other folders listed? If so, you can grab the data you need using the instructions in the following article: Recovering important data from an old profile

Tony98 said

After downloading Firefox Quantum, I had to sign in to FF Sync to get back all my Settings. That's all that was needed, and it's all good now. What are you seeing when you Sign In to Sync?

Yes, after FF do selfupdate (even that I prevent it, give only permission to notify me) he ask me to sign in to my sync account. That be strange because after I do update to 57.0.1 don't remember that quest but hey ok, it's just routine, everything will be ok, I sign in and hmm, can't login to G, FB, anything... look at saved logins in security setings of FF and only one is there : chrome://FirefoxAccounts for user : sfdjsrjrlejd...something like that .. so I wait and wait, and nothing happen . Try to on support page found some troubleshot but nothing, try to go bookmark revert trough Import and Backup in FF, I lost all bookmark. Look like all last 15 saved bookmark is corrupted. That is detailed description of my problem. Now have problem with mobile mozila , android platform, think because use FF56 not allow me to pin up site to my favorite page, strange that after that fail on mobile Mozila for android favorite page and bookmark from it also dispirited.

[Profanity removed by moderator. Please read Mozilla Support rules and guidelines, thanks.]

Chris Ilias said

If you lost both your passwords and bookmarks, it sounds like Firefox created a new user profile. In some cases, the old profile is still there, and it was just an issue of the new version finding it. Go to Help > Troubleshooting Information, then click on Open Folder. That will open Windows Explorer in your Firefox profile. Then go up one level. Are there any other folders listed? If so, you can grab the data you need using the instructions in the following article: Recovering important data from an old profile

Thanks, this is simple way to go in profile but there is no another , just one. Like I write before, something is bad with 15 saved bookmark, like all become corrupted and lotto of smaller then made after crash and passwords file look ok, big, but I can't login with FF 57.0.3 or see any of them. Thanks for help