This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

How can I open an XPI file extension?

  • 2 replies
  • 3 have this problem
  • 2 views
  • Last reply by cor-el

more options

I downloaded cooliris-1.12.0.36949-fx-win.xpi and am unable to install because of the xpi file extension.

I downloaded cooliris-1.12.0.36949-fx-win.xpi and am unable to install because of the xpi file extension.

All Replies (2)

more options

Windows doesn't recognize that file type, but Firefox does.

Drag that XPI into the Firefox browser to install it. Or use File > Open File to install it.

more options

Chosen Solution