Hi, I used to be able to copy all the files and folders from: C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\a4tgn35f.default-1533640645510 to another disk location, except for few files getting 'Destination Path Too Long', without any problems. The problem lies mainly with the '''JSON files.''' I do this copy primarily because I want my Firefox profile on laptop to match my desktop. Before copying the contents of my Firefox profile to my laptop I recall also being able to remove all files and folder in my laptops Firefox profile. - But it is not really necessary to remove the Firefox profile files on my laptop before copying to it. But now I have problems both copying and removing Firefox profiles - but for now it's only about copying the Firefox profile - not removing .... I have added some images showing what happens when trying to copy a Firefox profile. Please HELP. Best regards, Einar