Current Firefox blocks addons that are not signed by Mozilla. Old versions (pre-2015) did not enforce this.
Here’s a useful feature idea for users stuck on older versions of Firefox (e.g., legacy systems, corporate environments, or retro computing):
: Running a version older than the one that last accessed a user profile can lead to data loss or corruption of bookmarks and history.
You cannot find the oldest versions on the main Mozilla site. You need the official archive.
Current Firefox blocks addons that are not signed by Mozilla. Old versions (pre-2015) did not enforce this.
Here’s a useful feature idea for users stuck on older versions of Firefox (e.g., legacy systems, corporate environments, or retro computing):
: Running a version older than the one that last accessed a user profile can lead to data loss or corruption of bookmarks and history.
You cannot find the oldest versions on the main Mozilla site. You need the official archive.