We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Cant migrate my profile from windows 10 to Ubuntu 18.04

more options

I mounted my windows disk and acces profile folder this is my windows 10 Profiles.ini content.

[Install308046B0AF4A39CB] Default=Profiles/4mltjd12.default

[Profile1] Name=Neutronized IsRelative=1 Path=Profiles/2lebgv8x.Prof1

Locked=1

[General] StartWithLastProfile=1 Version=2


When I go to my windows 10 and i open firefox i go to "about:support" and the profile im using is 4mltjd12.default So what i try is to move this profile to my ubuntu 18.04 firefox profile and load it

Windows 10 partition mounted in /mnt

from /mnt/Users/localhost/AppData/Roaming/Mozilla/Firefox$

sudo cp -r Profiles/4mltjd12.default /home/localhost/.mozilla/firefox/


and edited profiles.ini of ubuntu firefox to

[Install4F96D1932A9F858E] Default=4mltjd12.default

  1. This is previous Default profile Default=4b9sltm5.default-release

Locked=1

[Profile1] Name=4mltjd12.default IsRelative=1 Path=4mltjd12.default Default=1

[Profile0] Name=default-release IsRelative=1 Path=4b9sltm5.default-release

[General] StartWithLastProfile=1 Version=2



But when trying to open firefox i get message: "Firefox already opened please close all firefox processes or restart" Am i doing something bad?

I mounted my windows disk and acces profile folder this is my windows 10 Profiles.ini content. [Install308046B0AF4A39CB] Default=Profiles/4mltjd12.default [Profile1] Name=Neutronized IsRelative=1 Path=Profiles/2lebgv8x.Prof1 Locked=1 [General] StartWithLastProfile=1 Version=2 When I go to my windows 10 and i open firefox i go to "about:support" and the profile im using is 4mltjd12.default So what i try is to move this profile to my ubuntu 18.04 firefox profile and load it Windows 10 partition mounted in /mnt from /mnt/Users/localhost/AppData/Roaming/Mozilla/Firefox$ sudo cp -r Profiles/4mltjd12.default /home/localhost/.mozilla/firefox/ and edited profiles.ini of ubuntu firefox to [Install4F96D1932A9F858E] Default=4mltjd12.default # This is previous Default profile Default=4b9sltm5.default-release Locked=1 [Profile1] Name=4mltjd12.default IsRelative=1 Path=4mltjd12.default Default=1 [Profile0] Name=default-release IsRelative=1 Path=4b9sltm5.default-release [General] StartWithLastProfile=1 Version=2 But when trying to open firefox i get message: "Firefox already opened please close all firefox processes or restart" Am i doing something bad?

All Replies (1)

more options

Hi Localhost, please ignore the spam message promoting an unofficial phone number.

Can you confirm there are no other Firefox processes running that could be accessing that profile folder?

Do you have a parent.lock file in any of the profile folders?

If you start up Firefox in the external Profile Manager dialog, can you successfully start in any of the profiles? More info: Profile Manager - Create, remove or switch Firefox profiles -- see the "when Firefox is closed" section.