How To Fix A Failed Microsoft Defender Update

Microsoft routinely releases updates for Windows and its components. Updates are generally beneficial for system efficiency and bug fixes, but users frequently run into problems when downloading them.

When system updates fail, there are several workarounds you may try, but what should you do if an application update fails? This post will examine potential fixes for the Microsoft Defender update issue, which affects users of Windows 10 and 11 frequently. Choose the course of action that best suits your circumstances.

Ways To Fix A Failed Microsoft Defender Update?

1. Turn Off All Third-Party Antivirus Software

In circumstances like the one at hand, third-party antivirus software frequently interferes with Microsoft Defender‘s operations. Disabling all third-party security software and then attempting to install the Defender updates once again is the only workable approach in this situation.

You can re-enable the security programs after the updates have been successfully installed. You may just right-click on the taskbar icons for the security apps to disable them, then select Disable > Disable till the next restart.

2. Windows Update Components Should Be Reset

If the update components are damaged or corrupt, you may also be unable to install Windows updates. You must fix them in order to install the most recent updates since they are necessary for the update service to function. Resetting these components to their original settings is the best method to fix them. Here’s how to go about it:

Step 1: Use the Windows search to enter cmd, then select Run as administrator.

Step 2: In the User Account Control window, select Yes.

Step 3: Enter each of the commands listed below one at a time into the ensuing window to put them into action.

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver


Step 4: Once finished, run the subsequent commands. The services that you previously disabled will restart as a result.

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

Step 5: Now that the Command Prompt window is closed, you can check to see if the problem has been fixed.

3. Microsoft Defender Service Should Be Restarted

The Microsoft Defender service itself may also be the source of the problem. The service might be experiencing a short-term issue or it might just be disabled. In this procedure, the Microsoft Defender service will be restarted and its startup type will be changed to automatic. In this manner, the service will immediately start up when you boot up the machine, enabling the system to successfully install updates.

Step 1: Open Run by pressing Win + R.

Step 2: Enter the command services.msc into the Run window.

Step 3: Locate and right-click on the Microsoft Defender Antivirus service in the following window.

Step 4: From the context menu, select Properties.

Step 5: Click the Stop button now. Prior to pressing Start, pause for a moment or two.


Step 6: After the service has been restarted, expand the Startup type dropdown and select Automatic.

Step 7:To save the changes, click Apply > OK.

Step 8: After this is finished, you can try reinstalling the targeted update to see if the problem has been resolved.

Bonus Alternative: Use T9 Real-Time Antivirus


Real-time antivirus will help you avoid the malware tools that thieves use, even though it might not always be able to stop attacks. One of the best antivirus programs available is T9 Antivirus, which obtained iVB100 certification two years ago and still maintains. There are a tonne of advantages to using this application, some of which include the following:

  • Threats like infections, zero-day threats, malware, Trojans, PUPs, adware, and more are all protected by T9 Antivirus.
  • Using a cutting-edge program like T9 Antivirus and malware protection software, which offers real-time security and several defenses, is the best way to lessen these risks.
  • Malware is stopped in its tracks by immediate security before it can infect your machine. Threats, such as identity fraud, security risks, and other problems, can all be prevented.
  • T9 Antivirus protects you against threats by routinely installing the most recent database definition updates.

The Final Word

Your system is protected from internal and external attacks by security programs like Microsoft Defender. The tool checks your system files for any potential issues that might put your system at risk. Like other system apps, it needs to be updated frequently for it to work correctly.

Now you know how to fix the issues with failed Microsoft Defender updates.So try them and let us know in the comments below if you have any questions or recommendations. We would be delighted to provide you with a resolution. We frequently publish advice, tricks, and solutions to common tech-related problems. You can also find us on Facebook, Twitter, YouTube, Instagram, Flipboard, and Pinterest.

Leave a Reply

Your email address will not be published. Required fields are marked *

Subscribe Now & Never Miss The Latest Tech Updates!

Enter your e-mail address and click the Subscribe button to receive great content and coupon codes for amazing discounts.

Don't Miss Out. Complete the subscription Now.