How to Resolve Windows Defender Error Code 0x800705b4 in Windows 10

Windows Defender is a built-in Windows 10 security tool that protects against malware and spyware. Windows Defender protects the system from external threats and actively works as an antivirus. That’s why many users don’t use third-party antivirus apps and rely solely on Windows Defender, which is fine as long as Windows Defender does its job. The best part is that you don’t have to pay anything for it, as it’s a free tool from Microsoft that comes pre-installed in Windows.

So what should you do if you can’t start Windows Defender because of error code 0x800705b4 or 0x80508020? If Windows Defender fails to start, your system becomes vulnerable to malware and viruses, and that’s not a good thing if you ask me. When you try to run Windows Defender, you get the following error message:

Windows Defender was unable to activate real-time protection.
This operation was aborted because the timeout expired.
Error code: 0x800705b4

What are the causes of Windows Defender error code0x800705b4?

What is the "Your virus and threat protection is managed by your organization" bug?

  1. The operating system update failed.
  2. Windows system files are corrupt or erroneous.
  3. The update service is not configured.
  4. Error in the registry.
  5. Virus/malware attack on your computer.

How to eliminate Window Defender error code 0x800705b4?

Uninstall antivirus

  1. Go to the Control Panel.
  2. Select Uninstall a program.
  3. Locate the antivirus program.
  4. Right-click on it and select Uninstall.
  5. Then restart your computer.

Launch SFC and DISM command

  1. Click Start Windows, type CMD, right-click the command line, and select Run as administrator.
  2. Type or copy the sfc /scannow command and paste it into the command line.
  3. Wait for the operation to complete.
  4. Type or copy and paste this command at the command prompt: DISM.exe /Online /Cleanup-image /Restorehealth.
  5. Wait for the process to complete, then run Windows Update.

Turn on services and firewall

  1. Click Windows Start, type “Services” in the search box, right-click and select Run as administrator.
  2. In the Services window, find Windows Defender, right-click on it and select Run.
  3. Then activate the Windows Firewall.
  4. Go to Control Panel -> System and Security -> Windows Firewall -> Enable or Disable Windows Firewall.
  5. Activate the firewall.
  6. Then reboot your system.

Frequently Asked Questions

Error 0x800705b4 is a hexadecimal data format that appears in the Windows system when the system is infected with a virus or malware when Windows system files are corrupted when Windows updates are corrupted or due to registry errors.

  1. The operating system update failed.
  2. Windows system files are damaged or corrupted.
  3. The update service is not configured.
  4. Registry error.
  5. Malware or virus attack on your PC.

  1. Go to the control panel.
  2. Select Uninstall program.
  3. Search for your antivirus.
  4. Right-click on it and select Uninstall.
  5. Then restart your computer.