This update resolves the "Malformed Data Frame Sent to a Windows 2000 Computer Through an Infrared Port Causes Stop Error" security vulnerability in Windows 2000, and is discussed in Microsoft Security Bulletin MS01-046. Download now to prevent a malicious user from causing your computer to crash by sending a malformed data frame to your computer's infrared port. Windows 2000 Security Patch: No Mapping of Virtual COM ports to Infared Ports in Windows 2000 27 Dec 2001