

This tutorial will not only show you how to do that, but also how to create backups and move or restore existing profiles. problems starting after installing an extension, or other features not functioning properly), the first thing you're usually asked to do in the tech support forum is to create a new profile. If you run into problems using Thunderbird (e.g. The profile is stored on your hard drive in a profile folder.

Mozilla Thunderbird stores all your personal settings, such as your mail, passwords and extensions, in a profile.
