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Firefox 77 install

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Firefox 77 will not install on macos Catalina. Firefox77 does not generate a default profile.

Firefox 77 will not install on macos Catalina. Firefox77 does not generate a default profile.

Chosen solution

Hi optics,

You need to locate the profiles.ini file and delete this file or use the Profile Manager to create a new profile.

See:

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

This issue can be caused by a problem with the profiles.ini file or with the permissions (owner) of involved folders.

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

  • 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

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

  • Windows: %AppData%\Mozilla\Firefox\
  • *C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\
  • 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>\AppData\Local\Mozilla\Firefox\Profiles\<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).

http://kb.mozillazine.org/Profile_Manager

https://support.mozilla.org/kb/Managing+profiles

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


Hope it helps. Thank You.

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All Replies (3)

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Hello optics,

This link help you a lot

How to download and install firefox in macos with easy steps http://mzl.la/1xKrRru

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I still get a "missing profile" error message.

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Chosen Solution

Hi optics,

You need to locate the profiles.ini file and delete this file or use the Profile Manager to create a new profile.

See:

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

This issue can be caused by a problem with the profiles.ini file or with the permissions (owner) of involved folders.

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

  • 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

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

  • Windows: %AppData%\Mozilla\Firefox\
  • *C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\
  • 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>\AppData\Local\Mozilla\Firefox\Profiles\<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).

http://kb.mozillazine.org/Profile_Manager

https://support.mozilla.org/kb/Managing+profiles

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


Hope it helps. Thank You.

Modified by Shashank Shekhar