Introduction to Windows. In October 2009, Microsoft released Windows 7. This version came less than 3 years after Microsoft released Windows Vista, which was released 6 years after Windows XP. Microsoft press releases in 2008 informed consumers that they would focus on multi-touch support and an updated Windows shell with a new taskbar. Windows Vista introduced new security features such as User Account Control and Windows Security Center and could be called Microsoft's most secure version of Windows. Windows 7 was an incremental upgrade designed to work with Vista-compatible applications and hardware. Unlike many versions of Windows prior to Windows 7, this version only seemed to upgrade a few key features and make very few major changes to the Windows Vista operating system as a whole. Windows Vista introduced several security features that improved Windows security. Some of these features are User Account Control, Windows Firewall, Windows Defender, Windows Parental Controls, and the ability to encrypt file systems. Due to the introduction of new security features in Windows Vista, it could be and is sometimes considered the most secure version of Windows to date. The introduction of the User Account Control framework allowed the user to control functionality as a standard user rather than an administrator. administrator password. Standard users who could not provide an administrator password could not approve changes to system settings or install new software. However, these users could make non-essential changes middle of paper......preventing users from running applications that unnecessarily consume network bandwidth or otherwise affect the enterprise IT environment is another AppLocker functionality. AppLocker also prevents users from running applications that destabilize their desktop environment and increase technical support costs. AppLocker can provide more options for effective desktop configuration management and allow users to run approved applications and software updates based on policies while preserving the requirement that only users with Administrative credentials can install or run applications and software updates. AppLocker helps ensure that the desktop environment complies with company policies and industry regulations. AppLocker is a simple and flexible mechanism that allows administrators to specify exactly what is allowed to run in their desktop environment..