Windows Defender: How to Manually Update Virus Definitions

How to manually update the virus and spyware definitions for Windows Defender.

1. Open Windows Defender.
2. Go to the Update tab.
3. Click the Update button, even if the status is green.
4. The latest virus and spyware definitions will download.

Video: https://www.youtube.com/watch?v=pfbySHVi4jM