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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

firefox keeps getteing a popup yellow bar with the message "A web page page is slowing down your browser"

  • 1 reply
  • 1 has this problem
  • 1 view
  • Last reply by FredMcD

revphil
revphil
more options

Today my wife's laptop running Windows 10 received a system message that the Windows 10 program was expiring. It asked for permission to install a new update. I allowed the update and everything seemed fine. Now, all day long while running Firefox, she keeps getting a popup yellow bar with the message "Another page is slowing down your computer". She chooses the "continue" option and within half-hour the yellow bar returns. This message continues to come up even though one tab is open!

Now the same problem is appearing on her desktop machine running firefox on Windows 10 with no update of her system. What's going on?

Today my wife's laptop running Windows 10 received a system message that the Windows 10 program was expiring. It asked for permission to install a new update. I allowed the update and everything seemed fine. Now, all day long while running Firefox, she keeps getting a popup yellow bar with the message "Another page is slowing down your computer". She chooses the "continue" option and within half-hour the yellow bar returns. This message continues to come up even though one tab is open! Now the same problem is appearing on her desktop machine running firefox on Windows 10 with no update of her system. What's going on?

All Replies (1)

FredMcD
FredMcD
more options

”Webpage is slowing down your browser” This is the new way the browser tells you there is a problem with the script program(s). https://support.mozilla.org/en-US/kb/warning-unresponsive-script?cache=no

https://support.mozilla.org/en-US/kb/task-manager-tabs-or-extensions-are-slowing-firefox