Alex refreshed Device Manager. There it was: USB Serial Port (COM1).
Or use a PowerShell snippet:
Use from Sysinternals to search for handles named \Device\Serial0 or \\.\COMx . portmon error 2
PortMon has not been updated since the Windows XP/2003 era. It does not work on 64-bit versions of Windows 7, 8, 10, or 11, nor does it support USB-to-serial adapters at the kernel level.
Corruption in HKLM\HARDWARE\DEVICEMAP\SERIALCOMM or HKLM\SYSTEM\CurrentControlSet\Services\Serial can cause Windows to report a port that doesn't properly respond to CreateFile . Alex refreshed Device Manager
Check "Run this program in compatibility mode for" and select . 3. Move the Executable to a Local Drive
Alex opened their trusty toolkit and launched , a powerful utility that acts like a surveillance camera for serial and parallel ports. Portmon would show exactly what data was traveling between the software and the hardware. PortMon has not been updated since the Windows XP/2003 era
The list was empty.
