Firefox Community Forum

Several weeks ago, I was attempting to upgrade from Windows 10 to Windows 11. In the process, I deleted Firefox (using Revo Uninstaller) and then reinstalled it, downloading it from the Mozilla website. Unfortunately, it didn’t run, giving me, at different attempts, different error messages. In the time since then, I have read many suggestions from many different websites and I have tried some of these suggestions, all with no success – until today. I have just completed the suggestions made on https://support.mozilla.org/en-US/questions/1327628 and Firefox is now back, working. I am happy and grateful, but not finished. None of my personal data came with the currently functioning version of Firefox. Since the re-emergence of Firefox, I have been reading several websites dealing with copy, backup and restore of my Firefox profile. Right now, the path C:\Users\rsuth\AppData\Roaming\Mozilla\Firefox\Profiles\ shows 5 folders: Two of the folders show 11/11/24 as the date modified (probably the date of the download from Mozilla). The folder 0dppjrfa.default contains one file, times.json, dated 8/11/2020. The other folder, ru82tlj5.default-release, has 97 items, most dated 11/11/2024. The remaining three folders are all dated 12/2/24 (today, as I write this). One folder’s name ends .default, the second name ends .default-release, and the third name ends .default-release-thirteen digits. The question that I am asking here is what do I do next to, hopefully, bring back the personal date I had with Firefox before my updating to Windows 11. Should I delete the folders dated 12/2/24? What, if anything, is the significance of the folder whose name ends in 13 digits? I’m hoping someone will be able to tell me how to fix these Firefox problems. And if I can, then I hope to be able to do something similar to help me bring back Thunderbird as well. Thunderbird became unfunctioning at the same time as Firefox. Thank you.

I'm 84 and know little about computers - when I try to get into e-mail it says "program running but not responding" How do I correct this? Please help. Since I can't open my e-mails you can't reach me. Phone: [edited phone# from public community support forum]

My system was hacked and I had to factory restore it. I didn't write down my login/passwords because I was informed that as long as I had my sign in for FireFox I could restore them on my system.

Alas, I cannot figure out how to do this. I do not have a passkey, a profile or anything other than the email address for my system.

Can you help me? I put all of my important documents in Dropbox and now I can;t access that either.

Anything you can do is appreciated.

Thea Giardina [edited email from public community support forum]

Thanks to a Microsoft update my PC had to have Windows reinstalled causing me to lose all my apps. I have reinstalled Firefox on the PC but of course, all my bookmarks and passwords are missing. I had set up syncing between my PC and my Android mobile devices (phone and tablet). Can I restore or sync from the mobile device back to the PC? I have searched and found nothing. Even when signed into Firefox on the phone, it does not bring up "Sync" when I go to settings. I truly appreciate your help.

I reinstalled windows, installed firefox and signed in but my bookmarks (toolbar) have not sync'd, I have bookmarks toolbar set to always show, and my android phone has firefox installed and the bookmarks are there, they just will not sync to my pc, whats up?

when attempting to move Firefox bookmarks to my new computer, I click import data within the Firefox page. The computer asks me to select the file. I have no idea where the bookmarks reside and cannot find a file. What is the procedure to get this done?

I am currently using Windows 10 Pro and wondering if putting off the change to Windows 11, will only multiply the number of potential losses, especially if I have disabled One Drive? I have 2 Desktop PC's and two laptops. all but one laptop(its running on 11 Pro), are running on Windows 10 Pro. Do Firefox users recommend taking Microsoft's offer for a free upgrade to Windows 11?

I want to be able to sign in and provide my own backup locally. I would also like to save a word document directly and with the shortest path possible; going from "User/my-username/documents" (same applies to all other data saved, like photos, music...), and not be forced to save to Microsoft's OneDrive. What is most disturbing about One Drive, is that it could be an additional option with its own pathway, rather than holding owners captive to Microsoft and it's objectives that are not chosen for my best interests.

I wonder how many Windows users even know that all of his/her information/data are First saved to a Microsoft cloud. Norton shares the options with you and gives the user the choice to backup in it's cloud

I don't have a problem of having my computers locally synced, but I do not want to be trusting Microsoft to have my computers sync in it's cloud. I personally, do not have any critical reason to have all of my computers sharing information. My desktops are each being used for unrelated tasks.

When/if the day comes that corporations like Microsoft, share it's suggestions, and are allowing the user to choose from the beginning, rather than making decisions for the owner of his/her computer, forcing them to discover what Microsoft has chosen and how to undo the choice without the risk of losing one's data; I will want to use my PC's locally, without being forced to log in with a Microsoft account.

I have read and watched many reviews that are suggesting/wanting to exit Microsoft's "ownership" of his/her computer, providing ways to turn off choices like One Drive and/or remove it completely.

Does Firefox have an opinion on this subject(emphasis being One Drive) and will I be OK with my Firefox account providing a backup of all data related to my use of Firefox? I have each computer backed up locally. Until things are turned around and all choices are turned back over to the local owner of his/her PC, I have a hard time of trusting any corporation selling my information.

I have the following problem and situation: I reinstalled Windows and did not write down the password for the Firefox account, and after logging in I restored the password, but it feels like my account has been re-registered, all saved tabs and passwords do not appear, but at the same time there is only one email that was used for synchronization and logging into the Firefox account. this email you can also contact through it: [email address]

I updated firefox, and all my addons and sign ins are gone now. Search history and tabs remained intact. It also created a folder on my desktop, but I'm not sure how do I "extract" my old data from it.

I bought a new computer 7-1-25 and I wanted to contact you about problems with your update, but it rejected my Acct Key - and when I looked at the email I got with the acct key it said Windows 10 - which tells me someone hacked my old acct because I have Windows 11 as of 7-1-25!

Why does Mozilla say insane things like put your passwords in a safe place? Mozilla just today made mine disappear. Can the morons at Mozilla understand the problems this has caused? I am through with sitting before this machine trying to get thru this B S ! Want to help now? Give me my G D password manager back... Safe... what a D joke.

suspected sessionstore.jsonlz4 corruption possible Sync rollback conflicts extremely large tab sessions spontaneous restoration of previously closed tabs during live browsing I am not a techy person. Have seen on Chat steps that can be taken, but it is too complicated for me. Seeking remote or other help. Would like to know how complex an issue this is. I'm having a very tough time. It just restored around 1,000 previously closed tabs. It takes me hours to close them because they get mixed up with the tabs presently opened. It interferes terribly with my work. I'm reaching out to IT companies and then found you through Chat GPT. Please help if possible. TY! This is a Lenovo t16 laptop with windows 11 for home or personal. I haven't had a tuneup for a long time. I read that's not a good thing to do with this issue.