Windows 11 Open Ports __full__

To discover which ports are actively listening or established on your PC, you can use native terminal utilities without downloading third-party software. Option 1: Native Command Prompt ( netstat )

Port 135 is the RPC Endpoint Mapper. It acts as a directory service for DCOM (Distributed Component Object Model) applications. When a client wants to communicate with a remote Windows service (like the Registry or Service Control Manager), they first query port 135 to find the dynamic port assigned to that service. windows 11 open ports

Run PowerShell as Administrator and enter: To discover which ports are actively listening or

: Critics note that Microsoft leaves certain consumer-focused ports (like those for file sharing or network discovery) open by default to ensure things work "out of the box," which some power users find unnecessary for security. When a client wants to communicate with a