How To Enable JavaScript In Internet Explorer | Custom Level

JavaScript runs in Internet Explorer 11 when Active Scripting is set to Enable in the Security tab’s Custom Level dialog under the Internet zone.

Internet Explorer 11 hides JavaScript behind a label called Active Scripting, not under any menu named “JavaScript.” The exact steps for how to enable JavaScript in Internet Explorer are the same across versions 7 through 11 and take about 30 seconds once you know which dialog to open. The setting lives in the browser’s Security configuration, and changing it requires clicking through four screens before you reach the toggle.

Most users miss the setting on the first try because they search for the word “JavaScript” inside the browser menus and never find it. The control bears a technical name that dates back to early browser security models, and the option sits inside a nested dialog that isn’t obvious from the main settings window. Once you know the path, the change takes effect immediately after you refresh the page.

Where Is The JavaScript Setting In Internet Explorer?

The JavaScript setting is labeled Active Scripting inside the Security tab’s Custom Level dialog. Microsoft designed the label around the browser’s internal scripting engine rather than the language name, which explains the confusion. The option lives in a section called Scripting alongside a separate entry for Scripting of Java applets—the latter controls Java, not JavaScript, and enabling it has no effect on JavaScript behavior.

The full menu path is consistent across Internet Explorer 7 through 11. Earlier versions may show slightly different window styling, but the option name and its location in the Security tab have remained unchanged through every modern IE release.

Step-By-Step: Enable JavaScript In Internet Explorer

1. Open Internet Explorer. If a page is already loaded, the setting will apply after you refresh.
2. Click the Tools icon—the gear symbol in the upper-right corner of the window. In older versions, the Tools menu appears as a text menu at the top of the screen.
3. Select Internet Options from the dropdown menu. This opens the browser’s main settings dialog.
4. Click the Security tab at the top of the Internet Options window. You’ll see four zone icons: Internet, Local intranet, Trusted sites, and Restricted sites.
5. Select the Internet zone icon—the globe image. This zone controls settings for all websites that aren’t explicitly assigned to another zone.
6. Click the Custom level… button near the bottom of the Security tab. A Security Settings dialog opens with a long list of browser options.
7. Scroll down to the Scripting section. It appears about two-thirds of the way through the list, under the ActiveX controls and plug-ins section.
8. In the Active Scripting row, select Enable. The default is usually Enable in the Internet zone, but some systems or enterprise policies may have changed it to Prompt or Disable.
9. Click OK in the Security Settings dialog. A warning message about security risks may appear—click Yes or OK to confirm the change.
10. Click OK again in the Internet Options window to close it.
11. Refresh the page or close and reopen the browser. The new setting takes effect once the page reloads.

after refreshing, pages that previously showed script errors or blank areas where interactive content should appear should now display and function normally.

Common Mistakes To Avoid

The most frequent error is changing the setting in the wrong zone. Select the Internet zone specifically—not Trusted sites or Restricted sites, because most websites fall under the default Internet zone. Changing the wrong zone leaves the setting inactive for the site you’re actually visiting.

Another common mistake involves the Scripting of Java applets option directly below Active Scripting. That setting controls Java—a completely separate technology—and enabling it does not turn on JavaScript. Only Active Scripting matters here.

Some users change the setting but forget to refresh the page afterward. The browser doesn’t reload automatically when you close the settings window; the page you already have open still runs under the old configuration until you refresh it. A simple F5 key press or right-click → Refresh resolves this.

Enterprise-managed computers may have Active Scripting grayed out or locked by Group Policy. If the radio buttons are disabled, the IT department has restricted the setting from the server side, and local changes won’t take effect no matter which dialog you open.

Table: Active Scripting Settings In Internet Explorer

This table summarizes the key components of the JavaScript setting and its location in Internet Explorer’s security configuration.

What If JavaScript Still Doesn’t Work?

If the Active Scripting setting is already Enabled but pages still fail to load JavaScript, the issue may be elsewhere. Some organizations use Group Policy to override local browser settings, effectively locking the option even when the dialog shows it as enabled. In those cases, neither the user nor the local machine can override the restriction without administrative intervention.

Outdated cached data can also prevent JavaScript from running correctly even with the setting enabled. Clearing the browser cache through Tools → Safety → Delete browsing history removes stale files that may interfere with script execution. Microsoft’s support documentation recommends this as a standard troubleshooting step after verifying the scripting setting.

Some websites detect the browser version and refuse to load interactive elements in Internet Explorer 11 regardless of scripting settings. This happens because IE11 is an out-of-support browser—websites have stopped testing against it, and many modern frameworks simply don’t run on its legacy engine. In these cases, the problem isn’t the setting but the browser itself.

Microsoft Edge includes an Internet Explorer mode that loads pages using IE’s engine while running inside a supported browser. If a site requires IE-specific behavior, Edge’s IE mode provides the compatibility without the security risks of running the standalone browser.

Does Enabling JavaScript In IE Require Any Other Changes?

Enabling JavaScript through Active Scripting is the only change needed for most users. The Scripting of Java applets setting, which sits directly below Active Scripting in the list, controls Java applet execution and has no relationship to JavaScript. Legacy guides sometimes recommend enabling both, but only Active Scripting affects JavaScript behavior.

Internet Explorer also includes a Prompt option for Active Scripting. Selecting Prompt instead of Enable makes the browser ask for permission each time a site wants to run scripts. This gives more control but creates frequent popups during normal browsing. For everyday use, Enable is the practical choice unless security concerns override convenience.

Enabling JavaScript in the Internet zone covers all websites unless a site has been explicitly added to the Restricted sites zone, where a separate Active Scripting setting may disable scripts independently. Checking the Restricted sites zone list ensures no site is accidentally blocked.

Internet Explorer Is No Longer Supported — What That Means

Microsoft ended support for Internet Explorer 11 on June 15, 2022. The browser no longer receives security updates, compatibility patches, or technical support. While the Active Scripting setting still works on existing installations, running IE11 today carries security risks that didn’t exist when the browser was in active development.

Microsoft recommends Microsoft Edge as the replacement, and Edge includes an Internet Explorer mode for sites that still require IE-specific rendering. The Edge setup for JavaScript follows a different path: Settings → Cookies and site permissions → JavaScript → toggle Sites can use JavaScript to On. Unlike IE’s zone-based system, Edge applies the JavaScript setting globally by default and allows per-site overrides.

Organizations still running IE11 for legacy internal applications should treat the Active Scripting setting as part of a broader migration plan rather than a long-term configuration.

Table: Internet Explorer 11 Vs Microsoft Edge — JavaScript Settings

Quick Checklist: Confirm JavaScript Is Enabled In Internet Explorer

After following the steps, verify the setting by opening the Custom Level dialog one more time:

• Open Tools → Internet Options → Security tab → Internet zone → Custom level.
• Scroll to Scripting and check Active Scripting—the radio button should show Enabled.
• Close all dialogs and refresh the page you were trying to use.
• If the site still doesn’t work, try clearing the browser cache and reloading.
• If the setting reverts after restarting the browser, an enterprise policy or third-party security software may be enforcing a different configuration.

That single Active Scripting toggle controls JavaScript across every site you visit in Internet Explorer 11. Nothing else in the Security Settings dialog affects JavaScript behavior, and no additional extensions or plugins are required for standard script execution.