Hello ahoover and welcome to the board,
Another tool you could use is:
COMDisable
It will let you:
• View a list of available COM ports on your computer
• Disable and enable these COM ports
Operating System Requirements
COMDisable is supported on computers that are running the following operating systems:
• Windows Server 2003
• Microsoft Windows XP
• Microsoft Windows 2000 Service Pack 3 (SP3) or later
COMDisable Syntax
COMDisable uses the following syntax:
comdisable /list
comdisable /disable COMPortNumber
comdisable /enable COMPortNumber
