Search the VMware Knowledge Base (KB)
View by Article ID

Failed to quiesce snapshot of the Windows 2008 R2 virtual machine (1031298)

  • 94 Ratings
Language Editions


  • Unable to create a quiesced snapshot of the Windows 2008 R2 virtual machine.
  • Cloning a Windows 2008 R2 virtual machine fails.

    Note: For additional symptoms and log entries, see the Additional Information section.


This issue occurs due to VSS application snapshots that are created without using the VMware software.

This is a known issue affecting ESX/ESXi 4.1 and later.
Currently there is no resolution.

To work around this issue, disable the VSS quiesced application based snapshots in the virtual machine. For more information, see Disabling VSS quiesced application based snapshots in virtual machine (2146204).

Additional Information

You experience these additional symptoms:
  • In the Application section of the Event Viewer in a virtual machine, Windows guest operating system reports an VSS error similar to:

    Volume Shadow Copy Service error: Unexpected error calling routine IOCTL_DISK_SET_SNAPSHOT_INFO(\\.\PHYSICALDRIVE1 ) fails with winerror 1168. hr = 0x80070490, Element not found.

  • Any process that creates a quiesced snapshot fails with the error.

    cannot create a quiesced snapshot because the create snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine.

  • Backup applications, such as VMware Data Recovery, fails with the error.

    Failed to create snapshot for vmname, error -3960 (cannot quiesce virtual machine)

For translated versions of this article, see:

To be alerted when this article is updated, click Subscribe to Document in the Actions box.


cannot-take-snapshot, create-snapshot-fails, take-snapshot,  error-3960, failed to quiesce the virtual machine, unable to create quiesced snapshot, quiesce snapshot could not be created, Failed creating on Data. Not Found Invalid Snapshot Configuration

This Article Replaces


Update History

01/27/2012 - Added product versions from 1030943 and also added the symptoms to close out 1030943 as duplicate. 04/19/2011 - Added information that the issue resolved in ESX4.1 U1 07/18/2012 - Added the Event Viewer VSS error in Symptoms section 08/24/2012 - Added links to KB 1007696 and 1031200 02/03/2014 - Added ESXi 5.5 and vCenter Server 5.5 to products 03/12/2015 - Added ESXi 6.0 to Products. 03/12/2015 - Added vCenter Server 6.0 to Products.

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.


  • 94 Ratings

Did this article help you?
This article resolved my issue.
This article did not resolve my issue.
This article helped but additional information was required to resolve my issue.

What can we do to improve this information? (4000 or fewer characters)

Please enter the Captcha code before clicking Submit.
  • 94 Ratings