How To Use Portqry Jun 2026

: No process is listening. For TCP, this means a "reset" packet was received; for UDP, it means an ICMP "Port Unreachable" message was returned.

portqry.exe -n 192.168.1.50 -p tcp -e 3389 how to use portqry

is a command-line utility provided by Microsoft that allows you to troubleshoot TCP/IP connectivity issues. It acts as a network probe to check if specific ports on a target computer are open, closed, or filtered. : No process is listening

| Result | Meaning | |--------|---------| | | A service is bound to the port and responded. | | FILTERED | No response received (firewall drop, host down, or no service). | | NOT LISTENING | Reached the host, but no service on that port (RST received). | It acts as a network probe to check

portqry -n sql01 -p tcp -e 1433

Output expectation: TCP port 80 (http service): LISTENING

PortQry can query specific like LDAP, NetBIOS, or SQL Server using the -o flag with known service names: