Performance and connectivity

Deal with error messages, crashing applications, connectivity issues, and slow performance.

Website will not allow Firefox to display the page if another site has embedded it

This page explains the error: "Website will not allow Firefox to display the page if another site has embedded it"

Last updated: 12/24/24

Have questions about web development or Firefox Developer Edition? MDN Web Docs has many resources you'll need to build a better web. Learn more.

Last updated: 11/19/24

Some popular video websites have changed their settings on the server side so that videos will no longer play in the background.

Last updated: 5/15/17

How to send a detailed crash report.

Last updated: 1/10/23