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

addons.mozilla.org won't install add-ons, asks for a newer version of Firefox (it says I'm using 36.0), even though I have the latest version (59.0.2).

  • 2 replies
  • 2 have this problem
  • 1 view
  • Last reply by cor-el

more options

El Capitan (10.11.6), Firefox 59.0.2

addons.mozilla.org won't install this add-on (https://addons.mozilla.org/en-US/firefox/addon/anonymox/?src=search), asks for a newer version of Firefox (it says I'm using 36.0), even though I have the latest version (59.0.2). Switching "privacy.resistFingerprinting" to "true" has no effect, except that addons.mozilla.org now sees it as 52.0 (I still need 56.0 or higher).

El Capitan (10.11.6), Firefox 59.0.2 addons.mozilla.org won't install this add-on (https://addons.mozilla.org/en-US/firefox/addon/anonymox/?src=search), asks for a newer version of Firefox (it says I'm using 36.0), even though I have the latest version (59.0.2). Switching "privacy.resistFingerprinting" to "true" has no effect, except that addons.mozilla.org now sees it as 52.0 (I still need 56.0 or higher).

Chosen solution

Your useragent in your More System Details on right of post. Mozilla/5.0 (Windows NT 6.3; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0

https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

Either you have both 36.0.x and 59.0.2 installed and started up 36.0.x or your useragent was modified in some way either manually or by a useragent switcher extension for example.

Read this answer in context 👍 1

All Replies (2)

more options

Chosen Solution

Your useragent in your More System Details on right of post. Mozilla/5.0 (Windows NT 6.3; WOW64; rv:36.0) Gecko/20100101 Firefox/36.0

https://support.mozilla.org/en-US/kb/how-reset-default-user-agent-firefox

Either you have both 36.0.x and 59.0.2 installed and started up 36.0.x or your useragent was modified in some way either manually or by a useragent switcher extension for example.

more options

Since you state that toggling "privacy.resistFingerprinting" has effect, it is very likely that you have a stuck user agent and need to reset general.useragent.override via the right-click context menu to the default value as stated in the above mentioned article.

Best if to leave resist fingerprinting disabled to avoid issues with websites like in this case with the Add-ons website. I think that there is a bug to blacklist the Add-ons website to disable spoofing the user agent in this case.