JMeter PerfMon issue “telnet is not recognised internal or external command”

This error generally means that the Telnet client is not installed on your system or is not properly configured
PerfMon Plugin uses the Telnet client to connect to the PerfMon Server Agent, which runs on the system you want to monitor. If the Telnet client is not installed or is not properly configured, the plugin will not be able to connect to the server agent and you will see the “telnet is not recognized” error message

To solve this issue, you will need to install the Telnet client and make sure it is properly configured

Here are the steps you can follow:

  1. Check if the Telnet client is already installed on your system. In Windows, you can check for the Telnet client by going to Start > Control Panel > Programs > Programs and Features. If the Telnet client is listed, it is already installed. If it is not listed, you will need to install it

  2. If the Telnet client is not installed, you can install it by following these steps:
  • Go to Start > Control Panel > Programs > Turn Windows features on or off.
  • Scroll down the list of features and check the box next to Telnet Client.
  • Click OK to install the Telnet client.
  1. Once the Telnet client is installed, you will need to make sure it is properly configured. To do this, you can follow these steps:
  • Go to Start > Control Panel > System and Security > System.
  • Click the Advanced system settings link on the left side of the window.
  • Click the Environment Variables button.
  • Under the System variables section, scroll down and find the Path variable.
  • Click the Edit button.
  • Add the path to the Telnet client to the end of the Variable value field. The path will typically be “C:\Windows\System32” (without the quotes).
  • Click OK to save the changes.

After following these steps, you should be able to use the Telnet command without receiving the “telnet is not recognized” error

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