The simplest explanation. PortMon lists all available ports from the registry ( HKLM\HARDWARE\DEVICEMAP\SERIALCOMM ). If you select a port that appears in the dropdown but physically no longer exists or was disabled, you'll see Error 2.
Start your troubleshooting by verifying the physical or virtual COM port exists and is not locked. If you are on a 64-bit OS or using USB-to-serial adapters, stop immediately and switch to a modern alternative. PortMon was retired for good reason – Error 2 is often the first sign that you have outgrown this legacy tool. portmon error 2
If the software tries to connect to a COM port that doesn't exist or is currently being handled by a missing driver, Windows returns Error 2 (File Not Found). How to Fix Portmon Error 2 The simplest explanation
However, one of the most common and frustrating errors users face is : "The system cannot find the file specified." Start your troubleshooting by verifying the physical or
Alex reopened Portmon and hit "Clear." They launched the Legacy Logistics app again.
mode com1: baud=9600 parity=n data=8 stop=1
This is the common trap of Error 2. To Windows, a port is just a special type of file. When the software asked to open COM1 , it was asking the Windows Kernel to find the "file" named COM1 and open a handle to it.