Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwavalwa lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

How can I use a Legacy Extension that 57.0 doesn't support and if not what older Versions of Firefox will support it? Thanks, rh1cm2

more options

My Legacy Extension won't work in 57.0 If you can't tell me how to get it working what older Version of Firefox will support it I would hate to use another browser.

My Legacy Extension won't work in 57.0 If you can't tell me how to get it working what older Version of Firefox will support it I would hate to use another browser.

All Replies (1)

more options

Whoops, your post duplicated. Let's continue here: https://support.mozilla.org/questions/1210835