Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

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

remote XUL no longer available in Firefox to set interface speed to broadband by internet provider

  • 1 reply
  • 2 have this problem
  • 18 views
  • Last reply by Dave G

more options

We had some problems with thunderbird lately and had to redo some settings. When resetting my email account on the server to 'Interface speed' from Simple (Dialup) to Advanced(Broadband) it comes up with the message: REMOTE XUL - this page uses an unsupported technology that is no longer available by default in Firefox. I have version 7.0.1

We had some problems with thunderbird lately and had to redo some settings. When resetting my email account on the server to 'Interface speed' from Simple (Dialup) to Advanced(Broadband) it comes up with the message: REMOTE XUL - this page uses an unsupported technology that is no longer available by default in Firefox. I have version 7.0.1

All Replies (1)

more options

Support for remote XUL was dropped a while back because it was a constant source of security concerns. If you find any website or application still using it you should report it as a bug to its developers.

There is a Remote XUL Manager extension which can be used to allow it to trusted sites on an individual basis if you really need it, but the only cases where this should legitimately come up are XUL code examples and some enterprise's internal software systems.