Security checklist for Windows
Take advantage of all the ways you can help keep your PC safer and more secure with Windows.
Check Action Center to make sure your firewall is on, your antimalware protection is up to date, and your PC is set to install updates automatically.
Use Windows Defender to help prevent viruses, spyware, and other malicious or unwanted software from being installed on your PC without your knowledge.
Use Windows SmartScreen to help protect your PC by warning you before running unrecognized apps and files downloaded from the Internet.
User Account Control
Make User Account Control (UAC) ask for permission before your PC installs software or opens certain kinds of apps that could be potentially harmful or make it vulnerable to security threats.
Use File History to regularly back up your personal files—like photos, documents, and music—automatically. If your PC has a hardware failure, you can restore any versions of the files that are most important to you. For more info, see How to use File History.
Windows Update can automatically download and install the latest updates for your PC.
Windows Firewall can help prevent hackers and malicious software, such as viruses, from accessing your PC through the Internet.