if you mean you want to save all your data that includes bookmarks, themes addons, password and history then you should setup sync account of firefox. Login into sync all of your data will be synced online. then u just have to login that on another computer it automatically will be available there.

then rest u can unistall firefox completely from your pc. thats it hope it does your work.

Hi!

I have done all that and because I synced it, now my data (bookmarks, themes addons, password and history) is available on the both computers. I want to delete everything on one of them and it doesn`t work. When I uninstalled firefox completely and then installed it again to check if the data of my account loads again, it did.

If you want to delete your personal data on a computer reliably then you would have to perform a secure wipe to clear the data on the hard drive. Otherwise Windows will only mark data as deleted.

Best is to disconnect from Sync before deleting data on a computer to avoid other computers from getting affected.

You can use the Profile Manager to remove a profile.

• http://kb.mozillazine.org/Profile_Manager
• https://support.mozilla.org/kb/Managing+profiles

• http://kb.mozillazine.org/Profile_folder_-_Firefox
• C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>\
• C:\Users\<user>\AppData\Local\Mozilla\Firefox\Profiles\<profile>\