Add-on for the website failed to run

Ivan Jenic
by Ivan Jenic
Troubleshooting Expert
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  • Internet Explorer has a long history with Windows 10, and so is the list of issues associated with it.
  • The article below will showcase what you can do when an add-on fails to launch in IE.
  • To read more about this amazing browser, check out our dedicated Internet Explorer Hub.
  • If you want to know more about browsers in general, visit our dedicated Browsers page.
add on for the website failed to run

The Add-on for the website failed to run error is usually encountered on older Windows versions and solely on Internet Explorer. The error prevents users from logging in or accessing certain websites.

One user shared his concerns on the Microsoft Answers support forum.

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I’m running Windows 8.1 with internet explorer 11.  I just started getting addon failed to run when I go to logmein and other web sites, that I haven’t had a problem until recently.  Don’t recall doing anything to Internet explorer…

Fix this Internet Explorer error by following the steps below.

Quick Tip:

Before going through the troubleshooting steps below, you should first consider whether switching to a different browser entirely is easier.

On that note, we recommend you try Opera, a web browser powered by the Chromium engine, just like Microsoft Edge and Google Chrome, which features an equally large library of extensions.

These add-ons can greatly change the functionality of Opera, from simple visual tweaks of the UI to adding new features and tools altogether.

Of course, if privacy add-ons are what interest you, know that Opera has some pre-built, such as a VPN or an ad-blocker.

Opera

Opera

A lightweight web browser that can be enriched thanks to its library of thousands of add-ons that are available for free.

How do I fix a failed add-on?

1. Modify security settings in Internet options

  1. Launch Internet Explorer.
  2. On the homepage, navigate to the Tools icon and click on it.
  3. Locate and select Internet options.internet options IE add on for the website failed to run
  4. Click on Security.Internet Options Security Custom Level add on for the website failed to run
  5. Locate and select Internet > Custom Level.
  6. Activate/enable the following settings:
    • Active Scripting
    • ActiveX Controls and Plug-ins
    • Automatic prompting for ActiveX controls
    • Binary script behaviors
    • Run ActiveX controls and Plug-ins
    • Script Active X controls marked safe for scripting
    • Miscellaneous
    • User Data Persistenceinternet zone enable settings add on for the website failed to run

7. Save changes and exit program.


2. Run the browser without add-ons (Windows 7)

  1. Click on the Windows icon to open the Start
  2. In the menu, click on All Programs.
  3. Select Accessories.internet explorer start menuAdd on for the website failed to run
  4. Click on System Tools > Internet Explorer (No Add-on).
  5. Exit program and check if the issue is resolved

If you are still getting the error message after running this procedure, you can try the next troubleshooting method.


3. Manage add-ons on Internet Explorer

  1. Open the Start menu: click on the Windows icon on your screen display.
  2. In the menu, locate the search bar and key in Internet Explorer.
  3. Select Internet Explorer on the list of search results.
  4. On the browser‘s homepage, locate and click on the Tools icon.manage add-ons internet explorer add on for the website failed to run
  5. Select Manage Add-ons.disable add on Internet Explorer add on for the website failed to run
  6. Disable the add-ons one by one, until you identify the problematic one(s).
  7. Re-enable other add-ons.
  8. Close program.

4. Reset browser

  1. Launch the browser.
  2. Navigate to the Tools icon and click on it.
  3. Select Internet options on the displayed window.internet options IE add on for the website failed to run
  4. Locate and click on the Advanced tab.
  5. Click on Reset under the tab. This action will prompt up a confirmation dialog box, with reads – Reset Internet Explorer Settings.
  6. Click on Reset in the dialog box to confirm the actionreset internet explorer add on for the website failed to run
  7. Allow the system to reset the browser.
  8. Click Close > OK.
  9. Restart computer.

After restarting your PC, the Add-on for the website failed to run error should now be fixed.

On rare occasions, when this error message still pops up after running all the four troubleshooting fixes in this tutorial, you can contact the Microsoft support team.

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Editor’s Note: This post was originally published in June 2019 and has been since revamped and updated in August 2020 for freshness, accuracy, and comprehensiveness.

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