We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

CONSTANTLY getting this very specific message: "A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. Script: chrome://ytoolbar/content/utils.js:60"

  • 4 replies
  • 167 have this problem
  • 9 views
  • Last reply by rjohnson19

more options

CONSTANTLY getting this prompt: "A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: chrome://ytoolbar/content/utils.js:60"

This happened

Every time Firefox opened

== going from site to site

CONSTANTLY getting this prompt: "A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete. Script: chrome://ytoolbar/content/utils.js:60" == This happened == Every time Firefox opened == going from site to site

All Replies (4)

more options

'ytoolbar'is the Yahoo! Toolbar. You could try to update it. I will give you a fair warning that I see people struggling to change their search engine settings back from Yahoo, the Toolbar could be a culprit in that.

Or you can disable it. See https://support.mozilla.com/en-US/kb/Using+extensions+with+Firefox#How_to_disable_or_uninstall_extensions

more options

I had the same problem. I uninstalled yahoo toolbar and reinstalled again and problem was gone

more options

this is the error message that I'm constantly getting for the start of firefox

A script on this page may be busy, or it may have stopped responding. You can stop the script now, or you can continue to see if the script will complete.

Script: file:///C:/Program%20Files%20(x86)/Mozilla%20Firefox/components/nsBlocklistService.js:648

more options

I have the same problem and believe the nsBlocklistService.js:648 refers to the Norton /Symantic security protection which is used to block phishing sites. I use Norton 360 and suspect it is the cause. Are you also using Norton?