By default, modern Windows operating systems operate under the principle of least privilege, meaning applications run with standard user permissions even if the logged-in user is an administrator. This report examines the mechanics, use cases, and security implications of this feature. 🛠️ Mechanism of Action
: Applications can read and write only to user-specific directories and cannot modify critical operating system files.
When a user selects "Run as Administrator," Windows utilizes the framework to transition the application's process from a standard token to an administrative token. Run as Administrator
: Running older applications designed before UAC was introduced, which expect continuous write access to root drives or system folders. 🔒 Security Implications
: Installing new hardware drivers or low-level software that binds tightly with the operating system. By default, modern Windows operating systems operate under
While indispensable for administration, the feature introduces notable security risks when misused.
: If a malicious application or a compromised web browser is run as an administrator, it gains full access to the entire operating system, enabling it to install malware or steal sensitive system files. When a user selects "Run as Administrator," Windows
: Executing critical system diagnostics such as the System File Checker ( sfc /scannow ) via the Elevated Command Prompt .