Download Windows Defender For Windows 10 64 Bit [top] Jun 2026

You cannot—and should not—try to download it from a third-party website. Any site offering a “Windows Defender download for Windows 10 64-bit” is either:

For most home users, . It provides:

No. Defender is updated via Windows Update, not standalone installers. There are no "older versions" officially available. download windows defender for windows 10 64 bit

To download Windows Defender for Windows 10 64-bit, follow these steps:

If you typed this search because Defender is missing, it is almost certainly disabled by another program, a group policy, or a registry edit. Use the enablement and troubleshooting steps in Part 3 and Part 7 to restore it. If you truly need a bootable emergency scanner, download from the official Microsoft website—but that is a tool, not the real-time antivirus. You cannot—and should not—try to download it from

Open the Start menu , type Windows Security , and select the app.

Unlike third-party antivirus software (like Norton, McAfee, or Avast), Microsoft Defender is an of Windows 10, including the 64-bit version. It installs automatically with the operating system and updates itself via Windows Update. Defender is updated via Windows Update, not standalone

This is not a replacement for the real-time protection of Windows Defender. It is an emergency scanning tool.

Microsoft frequently releases Defender definition updates via Windows Update. Go to and click Check for updates . Defender will automatically receive the latest signatures.