Fixed Windows Defender update bug 0x80240016

  • Error code 0x80240016 is an error that occurs when the Windows Update tool fails to complete its work.
  • It occurs most often in Windows 10, versions of this error are present in earlier Windows systems as well.
  • The steps to fix the error are the same for each of these systems.
  • If you’re using Windows 10 version 1909 or higher, you can also try Cloud Reset and see if that helps.
Updated February 2024This tool will stop these errors and fix common problems: Get it at this link
  1. Download and install the software.
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Windows Defender Security Center

There is a fake error message displayed on many websites, “Windows Defender Security Center”, which is often linked to other rogue websites. Users sometimes visit these websites inadvertently, as a result of potentially unwanted programs (PUPs) or intrusive advertisements.

Windows Protector

This anti-malware program is part of Microsoft Windows. In Windows Vista and Windows 7, it replaced Microsoft Security Essentials as a fully comprehensive antivirus program. It was initially released as a free anti-spyware program for Windows XP. It has evolved into a full antivirus program. [3]


Antivirus is software that is designed to detect, protect against, and remove malware on a computer or mobile device. Originally, it was created to protect against computer viruses, but now it’s more of a general term to describe software that uses a combination of advanced technologies to protect against a variety of threats, including ransomware, spyware, and even never-before-seen zero day attacks. Early antivirus programs would compare software file signatures against a list of known viruses to see if they matched, and if so, block them. Today, cybersecurity companies like Malwarebytes employ several different methods to detect, block, or remove malware from a device.

When users perform various tasks in Windows 10, Windows Update Error 0x80240016 may appear. It occurs when Windows or something like Windows Defender is updated. However, the error can be fixed quickly.

Windows Protection

In addition to providing real-time protection against viruses, Windows Defender helps protect the system against:

Users encountered an update error of 0x80240016 when trying to update Windows Defender, a handy feature that helps to eliminate unwanted spyware and malware.

In the update error, components necessary to download or install the update file are corrupted. It is unclear why this corruption occurs, but firewalls, antivirus programs, or network problems can sometimes prevent the update from working. Getting rid of error 0x80240016 is always possible.


What is the cause of Windows Defender update error 0x80240016?

What is the cause of Windows Defender update error 0x80240016?

The Windows Update tool fails to perform its tasks, causing error code 0x80240016. It is most frequently encountered in Windows 10 but it can be found in earlier versions of the Windows operating system as well. Each of these systems requires the same steps to fix the error.

Symptoms include:

  • Error in updating Windows
  • The system slows down or freezes
  • Program crash
  • “IMAP_LOGINFAILURE” is displayed as a message.

A qualified Windows repair technician is always available if you need assistance with any of the above methods. Some of the methods may be suitable for basic users, but some may require more advanced skills or knowledge.

Wind Defender

A complete range of protective environmental solutions is offered by Wind Defender, LLC.

Error code 0x80240016 is caused by several different issues, so following these steps is important to resolve them all.


To fix Windows Defender update error 0x80240016

Updated: February 2024

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To fix Windows Defender update error 0x80240016

Run the Windows Update diagnostic program

Depending on what Windows Update error 0x80240016 you are experiencing, you may be able to fix it by running the built-in Windows Update diagnostic assistant.

Run a virus scan

The following steps can be taken if you are still unable to resolve the problem after running Windows Defender or another reputable antivirus application.

Clear the Windows update cache

This folder contains files that you may need temporarily to install Windows Update. It is located in the Windows folder in Windows 10. To resolve Windows Update error 0x80240016, you must delete the contents of the Software Distribution folder and then retry the update. If this solution does not work, you must move on to the next one.

Perform a reboot, onsite update repair, or a cloud reset

In this case, try starting over and repairing all Windows updates to reset all its components if Windows Update error 0x80240016 is still not fixed after all.

Even if your Windows Updates are not working, you can still update Microsoft Defender by following this guide.

Free Antivirus With Windows 10

Free antivirus software for Windows, Bitdefender Antivirus Free (for Windows), provides protection against viruses and other malware.

It may also be helpful to try Cloud Reset if you are using Windows 10 version 1909 or higher.


RECOMMENATION: Click here for help with Windows errors.

Frequently Asked Questions

  1. Use the Windows Update diagnostic tool.
  2. Run the registry repair tool.
  3. Check your computer for malware.
  4. Update drivers and run software and operating system updates.

Go to the Microsoft website and check if the latest update is available. Install the updates, then restart your computer. Open Windows Defender and check if the error is fixed.

  1. Reboot your computer.
  2. Fix the Windows Update service.
  3. Restart the other services.
  4. Run the Windows Update diagnostic program.
  5. Disable IPv6.
  6. Check some registry values.
  7. Run the Windows Update Advanced Troubleshooter.

  1. To do this, open the Clean (rejected) obsolete updates page in Microsoft Technet.
  2. Click on the Clean WSUSserver button.
  3. Open File Explorer by clicking its button on the taskbar.
  4. Open the folder where you downloaded the script.

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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.