Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Eheka Pytyvõha

Emboyke pytyvõha apovai. Ndorojeruremo’ãi ehenói térã eñe’ẽmondóvo pumbyrýpe ha emoherakuãvo marandu nemba’etéva. Emombe’u tembiapo imarãkuaáva ko “Marandu iñañáva” rupive.

Kuaave
Oĩporãmava Ñongatupyre

Cannot add new search addons -- error says I'm not running Firefox

cor-el ombohovái
amandabee

I'm running Firefox 39.0, and trying to install the [WorldCat search plugin](https://addons.mozilla.org/en-US/firefox/addon/worldcat/?src=search). I can't -- I get an error,

   Sorry, you need a Mozilla-based browser (such as Firefox) to install a search plugin.

It looks like another user encountered the same error: https://support.mozilla.org/en-US/questions/1062916 but their solution won't work in this case.

I'm running Firefox 39.0, and trying to install the [WorldCat search plugin](https://addons.mozilla.org/en-US/firefox/addon/worldcat/?src=search). I can't -- I get an error, Sorry, you need a Mozilla-based browser (such as Firefox) to install a search plugin. It looks like another user encountered the same error: https://support.mozilla.org/en-US/questions/1062916 but their solution won't work in this case.

Opaite Mbohovái (3)

Ñemoĩporã poravopyre

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window

Safe Mode worked. But it is still kind of a bogus error.

I think that it is caused by one of the extensions that Ubuntu adds to Firefox.

  • Ubuntu Firefox Modifications
  • Unity Websites integration