Look on your desktop. Do you see a folder called; Old Firefox? Look inside. Look for the folder with the latest creation date.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

http://kb.mozillazine.org/Profile_folder_-_Firefox#Navigating_to_the_profile_folder

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

Type about:profiles<enter> in the address bar. How many profiles are listed? How many should be there? Also, open the profile folder in your file explorer.

what are the 3 url's listed for?

i want to restore, not fix the new version

i lost everything i had before i did that sync thing i want to get my screen and information settings back i do not want to fix what i have now i want a complete restore

See:

• https://support.mozilla.org/en-US/kb/recover-user-data-missing-after-firefox-update

i do not want this sync thing i want to turn it off and get my old firefox back

again

i lost everything i had before i did that sync thing i want this sync thing deleted/off my computer and get the firefox before i did the sync i want to get my screen and information settings back i do not want to fix what i have now i want a complete restore

i do not have this button to click on

Launch profile in new browser

this is what i get

Profile: default This is the profile in use and it cannot be deleted. Default Profile yes Root Directory C:\Users\just Me\AppData\Roaming\Mozilla\Firefox\Profiles\mofbgkd8.default-1609508467078 Local Directory C:\Users\just Me\AppData\Local\Mozilla\Firefox\Profiles\mofbgkd8.default-1609508467078 Rename

@mike

What operating system are you using?

I will guess Windows. I will help you open the folder on your machine where the firefox profile files live.

Click and hold the flag key then tap and release the letter R. I cannot provide screenshots as I do not myself use any microsoft products.

A box will open.

In the field enter:

%APPDATA%\Mozilla\Firefox

A folder opens

Is there a folder labeled Profiles inside that?

If no: your adventure stops here

If yes: open it

Is there a folder with some random characters?

If no: bummer

If yes: click it. Then right click. then click on COPY. Click your desktop. Right click. Click PASTE

do that step. dont skip it. You will need this to revert with your data.

so I'll pause here.

For other systems find path information on mozillazine

http://kb.mozillazine.org/Profile_folder_-_Firefox

Oh my they have updated the directions finally to use %APPDATA%

there are 5 folders

i clicked on

byy1dejv.default-1601468339120 the date is 1/1/2021 at 7:49am

there are other folders and the last on is empty

mofbgkd8.default-1609508467078 is a new profile that got created during the past day due to using the refresh feature in Firefox, so you can check the "Old Firefox Data" folder on the desktop for you old profile data.

You can copy certain files with Firefox closed to the current profile folder to transfer or recover personal data. Note that best is to avoid copying a full profile folder.

• bookmarks and history: places.sqlite
• favicons: favicons.sqlite
• bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
• cookies.sqlite for the Cookies
• formhistory.sqlite for saved autocomplete Form Data
• logins.json (encrypted logins;32+) and key4.db (decryption key;58+) for Passwords saved in the Password Manager
  key3.db support ended in 73+; to use key3.db in 58-72, make sure to remove key4.db
• cert9.db (58+) for (intermediate) certificates stored in the Certificate Manager
• persdict.dat for words added to the spell checker dictionary
• permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
• sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)

You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.

• Help -> Troubleshooting Information -> Profile Folder/Directory:
  Windows: Open Folder; Linux: Open Directory; Mac: Show in Finder
• https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data

those instructions are way above my technical ability. i am afraid i will do something incorrect and lose everything permanently

is there a way i can print my passwords, bookmarks etc just in case?

In Firefox 84 you can export the logins (passwords) as a CSV file in Lockwise (about:logins).

• https://support.mozilla.org/en-US/kb/export-login-data-firefox-lockwise

You can create an HTML backup of the bookmarks in the Bookmarks Manager (Library).

• https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer

thanks one more question i am to replace the new files from the old firefox from the desktop one file at a time correct?

Logins are an exception and you need to move both logins.json and key4.db as the former stores the logins and key4.db stores the encryption key, so both files need to match. Other files like I posted above aren't depending on each other, so there shouldn't be problems. Be cautious with restoring files and folders that I didn't mention.

i didn't do anything with this last night and shut the computer down now this morning i don't have the information i had last night. how do i get it back

i got it

i do believe i got it. will let you know for sure later on today after i check things out.