12 Feb 2026 — PortQry is a command-line tool that you can use to help troubleshoot TCP/IP connectivity issues. Microsoft Learn RPC error troubleshooting guidance - Windows Client
portqry -n exchange01 -p tcp -o 25,110,143,993,995
PortQry is not installed by default on Windows. It is part of the or the Windows Server 2003 Resource Kit Tools . However, it runs perfectly fine on modern versions of Windows 10/11 and Server 2016/2019/2022.
The command is a powerful Microsoft command-line utility used to troubleshoot TCP/IP connectivity issues . It determines the status of target TCP and UDP ports on local or remote systems. Port Status Results
portqry.exe -n <Name/IP> [-p <Protocol>] [-e <Port> | -r <Range> | -o <Order>]