You want to quickly restart Firefox without losing any tabs or windows that are still open? Then please read below.
There is a lot of useful information about Firefox hidden away behind the
about: URL protocol. The most useful is the URL
about:config, which displays preferences and settings that can be inspected and changed. One of these settings is
about:profiles a page users are sent to when Firefox requires a restart due to an update.
We can make use of this page when we want to quickly restart Firefox without losing any tabs or windows that are still open.
1. Type about:profiles in Firefox address bar and press Enter. It’ll open About Profiles page.
2. Now click on “Restart normally…” button to restart Firefox web browser. It’ll close Firefox and re-open it with all running tabs and windows.