Troubleshooting Slow Virtual Machine Boot Up



Virtual machines hosted on a Datto SIRIS can sometimes experience a slow boot process. This article outlines the steps to address this issue to help quickly boot a virtual machine.

Note: This applies only to slow Microsoft Windows virtual machines in a Disaster Recovery environment that are configured to have regular, live network connectivity.

Usually a slow boot process is due to services enabled in msconfig that are from manufacturers other than Microsoft.

Some services that are known to cause slow boot times:

  • Dell Server Management Tools
  • HP Server Management Tools
  • VMWare Tools

Your device can also boot slowly if it has too many services starting up with the machine, regardless of the manufacturer.


  1. Boot or reboot the virtual machine in Safe Mode. The boot process starts very quickly. If you miss the boot screen, reboot the VM and try again.

  2. Once the virtual machine boots in Safe Mode, access msconfig by clicking Start > Run > msconfig

  3. From msconfig, choose the Services tab, check the "Hide all Microsoft services" box, and then click the Disable all button.

    The "VirtualBox Guest Additions service" used for virtual drivers and is installed on the production machine during the ShadowSnap Agent installation will not be impacted by these steps. It will still start up when the virtual machine is rebooted.

  4. Reboot the machine. It should now boot much faster into the virtual environment with live networking enabled.

  5. Re-enable ShadowProtect Service, StorageCraft Raw Agent, and StorageCraft Shadow Copy Provider so that the next backup can complete properly.

Was this article helpful?

1 out of 1 found this helpful

You must sign in before voting on this article.

Want to talk about it? Have a feature request?

Head on over to our Community Forum or get live help.

For more Business Management resources, see the Datto RMM Online Help and the Autotask PSA Online Help .

Datto Homepage