Run the Windows Security Center to check the status of several security essentials on your computer. To do this, click Start, type Check security status, and then click Check security status. For more information about the Windows Security Center, visit the following Microsoft webpage: Windows Security Center.

Provides links to the uninstall tools and directions for many security programs.

Real-time protection is a feature in the Windows Security app that continuously monitors your device for potential threats such as viruses, malware, and spyware. This feature ensures that your device is actively protected by scanning files and programs as they are accessed or executed.

Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows 11, Surface, and more.

To block threats from malicious websites, use a modern browser like Microsoft Edge, which uses Microsoft Defender SmartScreen to identify sites with poor reputation. Upgrade to the latest version of Windows to benefit from a host of built-in security enhancements.

Fix problems that block programs from being installed or removed. Note: Fix problems with apps from Microsoft Store. Solution 1. Restart your PC. Solution 2. Repair or reset the app (if available) Note: Not all desktop apps support repair or reset options. Solution 3. Uninstall the app from Settings. Solution 4.

Get security info and tips about threat prevention, detection, and troubleshooting. Including tech support scams, phishing, and malware.

When you install, uninstall, or update a program on a Windows-based computer, you may receive one of the following error messages. The Windows Installer Service could not be accessed. Windows Installer Service couldn't be started. Could not start the Windows Installer service on Local Computer. Error 5: Access is denied.

In the Windows Security app on your PC, select Device security > Security details. For more information, see Windows 11 Secured-core PCs. Core isolation provides security features designed to protect core processes of Windows from malicious software by isolating them in memory.

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