Step-by-step procedure for installation. When you run the installer for the first time, you are shown the welcome screen, click Next.

Read the License Agreement and click I accept.

This step will validate whether your Windows is genuine or not. Click Validate to check, if your Windows is validated you will be moved to next step, otherwise installation will fail.

Now once your Windows has been validated, Security Essentials will now get ready to be installed. Click Install to begin installation.

Installing…

Once installation is complete, check the Scan My Computer checkbox and click Finish.

Once installation is complete, you will be redirected to automatic virus & spyware definition updates.

Now go to Home tab where you will be notified that everything is running smoothly.

To perform a System Scan, you can select from any one of the three options, Quick, Full, or Custom.