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

i got this message what should i do ? Remote XUL - This page uses an unsupported technology that is no longer available by default in Firefox. - Please contact the website owners to inform them of this problem.

more options

Hello I can't open a webmail on Mozilla Firefox but I can open it on explorer !!! I prefer to use Mozilla Firefox I've deleted all the history

please could you help me to get a solution, it's very urgent thanks a lot

Hello I can't open a webmail on Mozilla Firefox but I can open it on explorer !!! I prefer to use Mozilla Firefox I've deleted all the history please could you help me to get a solution, it's very urgent thanks a lot

All Replies (3)

more options

This extension will restore Remote XUL to Firefox 4+ via a whitelist for each domain.
https://addons.mozilla.org/en-US/firefox/addon/remote-xul-manager/

more options

Thanks a lot for the prompt answer it works !!! have a nice day

more options

You're welcome.

Please click the Solved button next to the answer that solved your Firefox support issue, it appears when you are logged in, so this thread gets marked as Solved to help other users who may have this same problem.