Type services.msc in the text box and press Enter. Step 1: Press the Windows key + R to open the Run dialog. However, if the service has failed to start correctly for some reason, you might have trouble accessing the Windows Security app. Typically, this service runs automatically every time your PC boots up. Security Center service is a small program that monitors security settings on your computer. Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackageĮxit the PowerShell window and try to use the Windows Security app again. Step 3: Paste the following command in the console and press Enter. Step 2: Select Yes when the User Account Control (UAC) prompt appears. Type in powershell and select Run as Administrator from the right pane. Step 1: Press the Windows key + S to open the search menu. Several users on the Microsoft forums reported fixing issues with the Windows Security app by resetting it via PowerShell. Reset the Windows Security App Using PowerShell This will restore all the app settings to their default values and resolve any issues caused by improper configuration. If the issue remains even after attempting a repair, repeat the same steps above and click the Reset button. Step 2: Scroll down to the Reset section and click the Repair button. Step 1: Click the search icon on the taskbar, type in Windows Security, and select App settings from the right pane. You can use it to fix any common issues with the Windows Security app and see if that helps. Windows 11 includes a useful repair tool for fixing app-related issues. If you rely on the Windows Security app to monitor your device’s health and performance, it can be frustrating when the app fails to open or work.īefore you jump ship to a paid third-party antivirus program, consider trying out the following troubleshooting tips to fix the Windows Security app not opening or working issue on Windows 11.

Windows Security (popularly known as Windows Defender) is a built-in app that offers real-time protection against viruses and malware for your computer.

Microsoft safety scanner stuck