You can prevent guests from writing any name-value pairs to the configuration file. This is appropriate when guest operating systems must be prevented from modifying configuration settings.


Turn off the virtual machine.


  1. Log in to a vCenter Server system using the vSphere Client.
  2. Select the virtual machine in the inventory panel.
  3. On the Summary tab, click Edit Settings.
  4. Select Options > Advanced > General and click Configuration Parameters.
  5. Click Add Row and type the following values in the Name and Value columns.
    • In the Name column:

    • In the Value column: true

  6. Click OK to close the Configuration Parameters dialog box, and click OK again to close the Virtual Machine Properties dialog box.