If Windows Security is not opening or working in Windows 11, then you can follow this guide to fix the problem. Use an admin account to do so.

Running the app through the Command Prompt can bypass the "This App has been Blocked by your System Administrator" message. However, you need administrator privileges to execute the command.

Microsoft has released the newest Windows 11 Build 25151 to the Dev channel insiders today. As usual, the new build brings plenty of changes and improvements, as well as bug fixes.

Microsoft's latest Windows update for Windows 11, Windows 10 is causing unintended UAC prompts to appear in certain cases for non-admin users.

Microsoft says the August 2025 security updates are triggering unexpected User Account Control (UAC) prompts and app ...

On Windows 11 (and 10), you can use these steps to understand and manage the security features available through the Windows Security app to protect your computer and data against viruses, other ...

Kernel-mode what now? In a nutshell, this is a freshly updated Windows 11 security feature (which was introduced with 22H2) that uses the processor to give software or games additional security ...

Microsoft has now confirmed that an April 2025 Windows security update is creating a new empty "inetpub" folder and warned users not to delete it.