Enabling a Serial port on a virtual machine fails with the error: Serial port connection control operation failed

Products

• VMware vSphere ESXi

Issue/Introduction

Symptoms:

• Enabling a serial port on a virtual machine fails with the error:
  
  Serial port (serial0) connection control operation failed.
  
  
• In the /vmfs/volumes/<datastore>/<VM directory>/vmware.log, you see message similar to:
  
  <YYYY-MM-DD><time>| vmx| I120: [msg.serial.uri.nolicense.basic] The currently available license does not permit the use of remote serial ports.
  <YYYY-MM-DD><time>| vmx| I120: [msg.device.badconnect] Failed to connect virtual device serial0.
  
  Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.</time></time>

Environment

VMware vSphere ESXi 6.0

Cause

The issue is occurs when the ESXi host is not licensed to use the serial port.

Resolution

To resolve this issue, ensure that:

• The ESXi host is licensed for Enterprise or above.
• The ESXi is licensed for Remote Virtual Serial Port Concentrator.

For list of features associated with the various licensing editions in vSphere 6.x., see Product offerings for vSphere 6.x (2109507).

Additional Information

Product offerings for vSphere 6.0
仮想マシンでシリアル ポートを有効にすると次のエラーで失敗する：シリアル ポートの接続制御操作に失敗しました (Serial port connection control operation failed)