How to fix the “Long-Running Script IE 11” error

  • Many users are experiencing an “Unresponsive error due to long-running script” in IE11.
  • This error is quite common in the IE11 browser and can be caused either by a general error or by enabling script debugging features.
  • The error may also be caused by third-party antivirus software on your system.
  • The problem can be completely avoided by accessing the advanced settings of Internet Explorer and disabling script debugging.
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Are you using Internet Explorer 11? Many users are experiencing an “Unresponsive error due to long-running script” in IE11. What is the reason for the error? How can you stop a script that has been running for a long time? We take a look at these questions with Techquack.

When scrolling through a web page, you may encounter the error “ is not responding due to a long script” if you are using version 11 of Internet Explorer.

An IE11 error similar to this can occur either as a result of a general error or as a result of enabling script debugging features in the browser. In addition, there are several effective methods that can fix this error. Let’s look at how to fix this error. It is also possible for the error to be caused by third-party antivirus software on your system.


What causes the “Long-Running Script” error in Internet Explorer 11?

What causes the "Long-Running Script" error in Internet Explorer 11?

There is an error message that appears when you scroll through the site using Internet Explorer 11 when you get the “No response due to long-running script” error. It usually occurs only when you visit certain websites.

Several possible reasons can cause the “long-running script” error, according to user reports and forums.

Common error: This is the main cause of the “long-running script” error in IE11. You can run Windows Internet Troubleshooter to fix this error.

Debugging: If your Internet Explorer 11 is configured to debug scripts and display script error notifications, you may get a “No response due to long-running script” error message.

Third-party antivirus software: Some users report that the “long script” error may be due to overprotection by the antivirus software.

IE 11 has a long-running script error that we need to resolve.


Fix “long-running script” error in Internet Explorer 11

Updated: February 2024

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Fix "long-running script" error in Internet Explorer 11

Run the Windows troubleshooter

When an error occurs, such as “Does not respond because a script has been running for some time”, it can be easily fixed by running Windows Internet Troubleshooter to identify the genetic error. If the problem is already documented by Microsoft, this utility will automatically fix it if your version of Internet Explorer is having problems.

If you receive the “Not responding due to a long script” error message in Windows Internet Explorer, here are steps to follow:

  1. It is recommended that you download Windows Internet Troubleshooter.
  2. The Windows Internet Convenience Store will open after you click the .diagcab file you downloaded.
  3. Choose the Checkbox for Apply repair automatically on the first screen after clicking the Advanced button.
  4. The next menu can be accessed by clicking Next.
  5. Click Apply this fix to complete the scanning and repair process. Sometimes you might have to wait for it to complete.
  6. Test whether the problem has been resolved by restarting your computer.

The next step should be taken if this method does not resolve the problem.

Disable script debugging

It seems that the majority of concerned users who encountered the “No response due to long script” error message resolved the issue by making some changes to the Internet options.

Apparently, if the script debugging feature of Internet Explorer is disabled and no error notifications are displayed for each script, the problem can be completely avoided. In Windows 7, Windows 8.1, and Windows 10, this process has been confirmed to be successful.

Here’s how you can disable script debugging and prevent script errors from appearing in the browser’s Advanced Settings menu:

  1. On the top right corner of the screen, click the gear icon to open Internet Explorer 11.
  2. The Internet Options menu will appear after you click on the settings menu.
  3. On the top horizontal menu of Internet Options, select Advanced.
  4. You can disable script debugging (Internet Explorer) by going to Settings and scrolling down to Navigation. Then uncheck the Show script error notifications checkbox.
  5. Restart Internet Explorer 11 after saving your changes by clicking Apply.
  6. You can test if the problem has been fixed by repeating the action that caused it earlier.

You can proceed to the next possible solution below if the problem persists or you need another solution.

Removing a third-party security package

Internet Explorer 11 may have difficulties running certain scripts as a result of an overly protective anti-virus package, according to several affected users.

By disabling real-time protection or uninstalling the third-party security package, you can resolve the issue if you encounter the “No response due to long script” error.

You may be able to fix the problem by disabling real-time protection. Most antivirus suites have a menu in the system tray where you can disable real-time protection. With each program, however, the exact steps differ.

To make sure that the problem isn’t caused by a third-party package, remove the entire security package if this does not work.


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Frequently Asked Questions

In the Internet Options window, open the Advanced tab. Under Settings, scroll down and select Disable script debugging (Internet Explorer) under Browser. Scroll down and uncheck Show script error notifications. Click Apply and OK to save your changes.

This error is quite common in the IE11 browser and can occur either due to a general error or when script debugging is enabled. The error may also be caused by third-party antivirus software on your system.

Although the script error is caused by a violation of the original browser policy, a script that runs for a long time indicates a performance issue. Every browser has a script execution timeout. If the script takes longer to execute, a "Long script" error will be displayed.

Script error messages are displayed by Internet Explorer when there is a problem with the JavaScript or VBScript code of the viewed site. Sometimes a script error can be caused by an error while loading a web page, but more often it is an error on the web page itself.

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Mark Ginter is a tech blogger with a passion for all things gadgets and gizmos. A self-proclaimed "geek", Mark has been blogging about technology for over 15 years. His blog,, covers a wide range of topics including new product releases, industry news, and tips and tricks for getting the most out of your devices. If you're looking for someone who can keep you up-to-date with all the latest tech news and developments, then be sure to follow him over at Microsoft.