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<!DOCTYPE topic PUBLIC "-//OASIS//DTD DITA Topic//EN" "topic.dtd">
<topic xml:lang="en-us" id="disabletimesync">
  <title>Disabling the Guest Additions Time Synchronization</title>
  
  <body>
    <p>Once installed and started, the <ph conkeyref="vbox-conkeyref-phrases/product-name"/> Guest Additions will try to
      synchronize the guest time with the host time. This can be prevented by forbidding the guest service from reading
      the host clock: </p>
    <pre xml:space="preserve">$ VBoxManage setextradata <varname>VM-name</varname> "VBoxInternal/Devices/VMMDev/0/Config/GetHostTimeDisabled" 1</pre>
  </body>
  
</topic>
