The User Account Control (UAC) in Windows is a security feature designed to prevent unauthorized changes to your system. It acts as a gatekeeper by prompting users for permission or administrative credentials before allowing actions that could affect the system’s stability or security. This includes installing software, altering system settings, or running applications that require elevated privileges. UAC helps protect against malware by limiting the ability of unauthorized programs to execute changes. By isolating administrative functions, UAC encourages a principle of least privilege, ensuring users operate under standard permissions unless absolutely necessary, reducing vulnerabilities and maintaining system integrity.