How To Use Portmon Free Jun 2026

: Portmon natively supports 32-bit (x86) legacy Windows versions including Windows 95, 98, NT, 2000, XP, and Server 2003.

PortMon does not work on modern 64-bit versions of Windows (8, 10, 11) due to driver signing changes. For modern systems, use SerialMon from Sysinternals or a logic analyzer. However, if you maintain legacy manufacturing equipment, POS systems, or embedded devices running older Windows, read on. how to use portmon

If you just let Portmon run, it will capture system garbage and background noise. You must use filters to find what you need. : Portmon natively supports 32-bit (x86) legacy Windows

By default, Portmon usually starts capturing immediately if it detects the drivers. if you maintain legacy manufacturing equipment