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TCP Port Check for Windows 11  |  22-Apr-2024

Port Check Tool

PortCheck is a free command line tool for Windows 10 / Windows 11. It checks if a remote machine answers on a specific TCP port.

  • Displays permanently whether devices answer on a particular TCP port

  • Shows response time in ms with colored output

  • Checks multiple devices simultaneously on predefined or self defined ports

  • Beep for reachable or unreachable ports

  • ERRORLEVEL for use in own batch files

  • Logging with date and time possible

  • Developed for Windows 7 / 8 / 10 / 11 and Windows Server 2008 / 2012 / 2016 / 2019 / 2022

  • Portable tool

  • Free - for private and professional use


Easy syntax:

PortCheck [-t] [-i] <hostname(s)> <port(s)>

More complex syntax:

PortCheck [-t] [-i] [-w:<pause in s>] [-st] [-nc] [-oo] [-nl] [-tc]
          [-rcf:<batch file when closed>] [-rcc:<closed count>] [-rco] [-rch]
          [-rof:<batch file when open>] [-roc:<open count>] [-roo] [-roh]
          [-replaceopentext:<text when open>] [-replaceclosedtext:<text when closed>]
          <hostname(s)> <port(s)> [<timeout in ms>] [<name of logfile>] [<description>]

Some examples:

PortCheck 80
Checks once if answers on port 80 (HTTP).

PortCheck -t 443

Checks continuously (as with the ping command) if responds on port 443 (HTTPS).

PortCheck -t Server1,Server2 3389
Checks continuously if Server1 and Server2 respond on port 3389 (RDP).

For more examples please visit the tcp port check windows website. The TCP port check is also integrated in out graphical ping tool PingTool 4.0.

Content: check connection to port, test tcp connection, check open port