Mac Library Folder Missing In User

Dec 12, 2016 And remember, the system level /Library folder is different from the user level /Library. How to Access User Library in MacOS Mojave, macOS Catalina, and MacOS Sierra. If you don’t need to constantly show the /Library folder on the Mac, you can just access it when needed by using the “Go” menu.

Do you have an 'Old Firefox Data' folder on the desktop?

When you Refresh/Reset Firefox then a new profile is created and some personal data (bookmarks, history, cookies, passwords, form data) is automatically imported.The current profile folder will be moved to an 'Old Firefox Data' folder on the desktop.Installed extensions and other customizations (toolbars, prefs) that you have made are lost and need to be redone.

You can use one of these to make Firefox create a new default profile or recover an existing profile:

Mac
  • Delete the profiles.ini file to make Firefox create a new (default) profile
  • Use the Profile Manager to create a new profile
    If you still have an existing profile then click 'Choose Folder' in the Profile Manager and browse to the location of a lost profile to recover this profile
    https://support.mozilla.org/kb/Managing+profiles

Can't See Library Folder Mac

You should find the profiles.ini file in this hidden location:

Mac Library Folder Missing In User Windows 7

  • Windows: %AppData%MozillaFirefox
    *C:Users<user>AppDataRoamingMozillaFirefox
  • Mac: ~/Library/Application Support/Firefox/
  • Linux: ~/.mozilla/firefox/

If clearing the profiles.ini file isn't working then also check the location of the cache files.

  • Windows: *C:Users<user>AppDataLocalMozillaFirefoxProfiles<profile>
  • Mac: ~/Library/Caches/Firefox/Profiles/
  • Linux:~/.cache/mozilla/firefox/

You can also try to rename/delete the MozillaFirefox folder in both above mentioned locations (main, cache).