Windows Defender Not Updating in Windows 10

Here we can see “Windows Defender Not Updating in Windows 10

  • Your system won’t be secured entirely if Windows Defender won’t update so, you would like to deal with that as soon as possible.
  • As a preliminary fix, you ought to check if there’s another antivirus installed that’s blocking it.
  • Of course, you’ll also ditch any such issues if you install a far better security solution.
  • For instant, attempt to install the virus definitions manually from the Microsoft website.

What am I able to do if Windows Defender won’t update?

1. Preliminary fixes

Before stepping into more detailed explanations, let’s get through a few basic checks and steps to perform:

  • Check if you’ve got other security software installed, as these will close up Windows Defender and disable its updates; uninstall your current anti-malware software.
  • Check for updates in Windows Defender Update Interface and check out Windows Update if it failed; to try to to this, click the shield icon within the notification area, select Virus & threat protection, then click on Check for updates.
  • Install all updates which will be pending and restart your computer, then try the Windows Defender update again; set Windows Defender to automatically get updates (it gets this as a part of Windows Updates)
  • Run the Windows Update troubleshooter

2. try a particular antivirus solution

When Windows Defender fails to satisfy your expectations, it’s time to think about using an alternate. Well, if you would like to forget all about update errors, then try the answer below.

This professional antivirus does its job within the background and always keeps you safe from computer viruses, malware, ransomware, and fraud.

Moreover, rest assured that it’s easy to put in on your computer and easy to use, having no pointless features that would clutter the interface.


3. Manually install update definitions

  • Go to the Windows security portal.
  • Follow the instructions to download and install the definition updates.
  • If you can’t install manually or still get update errors, other things are hindering it, so contact Microsoft tech support for further assistance.

Microsoft usually delivers updates through Windows Update, Automatic Updates, or Windows Server Update Service (WSUS).

In some cases, Windows Defender won’t update due to problems with these services. During this case, update the definitions manually, as described above.

If you were ready to install updates manually, the difficulty is caused by a Windows Update problem. Therefore, we gave a great list of tools that will assist you in solving Windows Update issues.

4. Verify that you have all required Windows Update files

  • Open the Windows Update website.
  • Install all recommended updates.
  • Review the Windowsupdate.log file for error messages by clicking Start, then type %windir%windowsupdate.login within the Search box, then press Enter.
  • Go to Windows Help and How-to website and enter the keywords describing the matter from the log file you found.

Usually, all the needed updates will come right to your PC, but sometimes, if they’re blocked for a few reasons, you won’t see them. Perform the steps below to form sure you’re up-to-date.

5. Set Windows Defender service as automatic

  • Press the Windows key + R keyboard shortcut to start Run.
  • Type services.msc and press Enter.
  • Right-click Windows Defender antivirus service.
  • Click Properties.
  • Ensure that Service Status is running
  • Ensure Startup type is Automatic (if not, select Startup type as automatic and click on Start).
  • Click Apply, then click OK.

If Windows Defender service doesn’t start, inspect this detailed guide to repair the matter in no time.

6. Run an SFC Scan

  • Click Start.
  • Type cmd within the search box.
  • Click on Run as Administrator to start promptly as administrator
  • Type sfc/scannow and press Enter.

This will check whether there are corrupted system files that prevent the default antivirus from updating.

User Questions:

  1. Windows defender not updating: techsupport – Reddit

Windows defender not updating from techsupport

Hey, for the last few day i have had one update of the windows defender but it doesnt let me do it and i don’t know why, if anyone has any tips id …

  1. Windows 10 Fix for update and defender not working – Reddit

Windows 10 Fix for update and defender not working from windows

after the reboot, windows updates started working correctly (however windows defender did not for some reason).

  1. I updated my computer and Windows Defender 

I updated my computer and Windows Defender disappeared. from antivirus

My computer forced a Windows 10 update, and when it came on Windows … advice and not only repaired Windows Defender, but I replaced with Kaspersky.

  1. Windows 10 update failed to download todays defender

Windows 10 update failed to download todays defender update from WindowsHelp

I did not use my pc yesterday. Today Windows 10 update failed to download todays defender update. Gave me an error Id 20 with error code 0x8024200B …


  1. My windows defender is missing: Windows10 – Reddit

[deleted by user] from Windows10

I don’t have a an anti-virus and when I check for windows defender in system config I find but it says “Stopped” When I search for it, the option to …

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