Windows 11 Open Ports Hot!

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.

PowerShell provides a cleaner, more modern way to view this data. Right-click the and select Terminal (Admin) . windows 11 open ports

: Use netstat -ano to see the Process ID (PID) , which you can then match in the Task Manager (Details tab) to find the exact application. Port 135 is the RPC Endpoint Mapper