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. Find the virtual machine in the vSphere Web Client inventory.
    1. Select a data center, folder, cluster, resource pool, or host.
    2. Click the Related Objects tab and click Virtual Machines.
  2. Right-click the virtual machine and click Edit Settings.
  3. Select VM Options.
  4. Click Advanced and click Edit Configuration.
  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.