What's your computer system and Firefox version?

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

It's ubuntu 16.04 LTS and Firefox is 65.0.1

Any idea?

fcis said

I have a new ubunutu 16.04 machine which I recently connected to my workplace domain where multiple users login to the same machine with there workplace account names. When a user login to the machine it logins successfully but when try to open firefox get this message your firefox profile cannot be loaded. it may be missing or inaccessible I tried some suggested solutions: sudo chmod -R 777 .mozilla/ rm -rf ~/.mozilla/ rm -rf ~/.cache/mozilla/ https://askubuntu.com/a/314915/304905 I tried all these but nothing worked. I wonder how I can fix this permanently from my machine local admin account so that when a new user logins to the machine for the first time firefox works without problems and without him having to do something?

It's ubuntu 16.04 LTS and Firefox is 65.0.1

https://support.mozilla.org/en-US/kb/update-firefox-latest-version?cache=no Did you update Firefox to the latest version 65.0.2 February 28, 2019

This is usually an issue with an existing profiles.ini file that points to a non existing profile.

Use the Profile Manager to create a new profile.

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