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Persistent "Firefox profile cannot be loaded" error after update.

Kuphostiwe

Hi!

After update to 56.0, I was getting multiple following messages when starting and/or using Firefox. Eventually, all my bookmarks loaded without problem, but the error windows appeared consistently:


"Your Firefox profile cannot be loaded. It may be missing or inaccessible."


Attempted solutions (with no success):

 - Delete %appdata%/Mozilla/Firefox/profiles.ini file
 - Delete the whole %appdata%/Mozilla/Firefox folder
 - Re-install firefox
 - Delete the %appdata%/Mozilla folder, delete C:\ProgramFiles\Mozilla Firefox folder and re-install
 - Remove old profile and add new one using "firefox.exe -P"
 - Repeat some of the above 5x

Working solution: Reboot

 - I noticed Kaspersky antivirus was demanding restart after its own update.
 - Firefox error said "inacsessible", and antivirus frequently locks out our files during development.
 - Kaspersky forces its plugins into browsers, so I gave restarting it a try.
 - The Firefox works after reboot with no errors even with the original (restored) contents of the %appdata%/Mozilla folder.

Suspected cause of the problem:

 - The Kaspersky automatically installs its extension into browsers (even after manually removing or disabling them). 
 - I suspect that the updates/installs somehow conflicted.

EDIT: Reformatting for better readability. Added missing info into "attempted" solutions.

Hi! After update to 56.0, I was getting multiple following messages when starting and/or using Firefox. Eventually, all my bookmarks loaded without problem, but the error windows appeared consistently: "Your Firefox profile cannot be loaded. It may be missing or inaccessible." Attempted solutions (with no success): - Delete %appdata%/Mozilla/Firefox/profiles.ini file - Delete the whole %appdata%/Mozilla/Firefox folder - Re-install firefox - Delete the %appdata%/Mozilla folder, delete C:\ProgramFiles\Mozilla Firefox folder and re-install - Remove old profile and add new one using "firefox.exe -P" - Repeat some of the above 5x Working solution: Reboot - I noticed Kaspersky antivirus was demanding restart after its own update. - Firefox error said "inacsessible", and antivirus frequently locks out our files during development. - Kaspersky forces its plugins into browsers, so I gave restarting it a try. - The Firefox works after reboot with no errors even with the original (restored) contents of the %appdata%/Mozilla folder. Suspected cause of the problem: - The Kaspersky automatically installs its extension into browsers (even after manually removing or disabling them). - I suspect that the updates/installs somehow conflicted. EDIT: Reformatting for better readability. Added missing info into "attempted" solutions.

Okulungisiwe ngu akwky

Isisombululo esikhethiwe

Hi, thanks, but this issue differs from all your linked ones in that it is *persistent* even after wiping all folders and reinstalling Firefox.

I have added more information into the original question. The working solution is also included:

Reboot the system.

Funda le mpendulo ngokuhambisana nalesi sihloko 5

Eminye Imininingwane Yohlelo

Isisebenziso

  • I-ejenti Engumsebenzisi: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0

Eminye Imininingwane

FredMcD
  • Top 10 Contributor
4230 izisombululo 59038 izimpendulo
Kuphostiwe
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/how-run-firefox-when-profile-missing-inaccessible

Isisombululo Esikhethiwe

Hi, thanks, but this issue differs from all your linked ones in that it is *persistent* even after wiping all folders and reinstalling Firefox.

I have added more information into the original question. The working solution is also included:

Reboot the system.

Hi, thanks, but this issue differs from all your linked ones in that it is *persistent* even after wiping all folders and reinstalling Firefox. I have added more information into the original question. The working solution is also included: Reboot the system.

Okulungisiwe ngu akwky

FredMcD
  • Top 10 Contributor
4230 izisombululo 59038 izimpendulo
Kuphostiwe

Have you contacted Kaspersky support? As a test, disable Kaspersky. Is the problem still there. Note: just start Firefox. Does it load properly?

Have you contacted Kaspersky support? As a test, disable Kaspersky. Is the problem still there. Note: just start Firefox. Does it load properly?