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! 🎁

Sök i support

Akta dig för supportbedrägerier: Vi kommer aldrig att be dig att ringa eller skicka ett sms till ett telefonnummer eller dela personlig information. Rapportera misstänkt aktivitet med alternativet "Rapportera missbruk".

Läs mer

Can't install any add-ons - "You need to download Firefox to install this add-on.". Firefox is latest version.

  • 2 svar
  • 17 har detta problem
  • 4 visningar
  • Senaste svar av Bluegreen0

more options

After upgrading to Quantum, I'm unable to install any add-ons from https://addons.mozilla.org.

I've made sure I'm using the latest version of Firefox.

When I find an add-on I want to install (having checked it's compatible with Quantum), the 'Add To Firefox' button is always disabled and below is a red banner saying: "You need to download Firefox to install this add-on."

Does anyone have any suggestions?

Edit - I've also made sure there are no active add-ons.

Thanks

After upgrading to Quantum, I'm unable to install any add-ons from https://addons.mozilla.org. I've made sure I'm using the latest version of Firefox. When I find an add-on I want to install (having checked it's compatible with Quantum), the 'Add To Firefox' button is always disabled and below is a red banner saying: "You need to download Firefox to install this add-on." Does anyone have any suggestions? Edit - I've also made sure there are no active add-ons. Thanks

Ändrad av Bluegreen0

Vald lösning

Alla svar (2)

more options

Vald lösning

hello, please see if this helps: How to reset the default user agent on Firefox

more options

Thanks philipp, that worked. Appreciate your help (and the quick response).

As an aside, even when the button was disabled, I found I was able to download the add-on xpi manually.

Right-click the disabled "Add To Firefox" button, and select "Save Link As". Then drag and drop the downloaded xpi file on to Firefox to install it.