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Product Version: 10.5
Last Modified: 23 November 2021


The following error message appears:

Quiesced (application-aware) checkpoint of this VM cannot be created.


The application-aware mode for Hyper-V uses the Volume Shadow Copy Service (VSS).

Hyper-V 2012

Hyper-V 2012 doesn't have an implementation of VSS, so when the Application-aware mode is enabled, the checkpoint works as follows:

  • NAKIVO Backup & Replication injects a runtime VSS Driver into the VM.
  • NAKIVO Backup & Replication requests the VSS Driver to create a quiesced checkpoint.
  • VSS Driver uses VSS inside a Windows VM to freeze I/O requests of applications inside the OS.
  • If OS quiescing fails to create an application-consistent checkpoint, NAKIVO Backup & Replication displays this error.

Hyper-V 2016 and 2019

Hyper-V 2016 and 2019 has an implementation of VSS, so the VSS is used for the application-aware mode.

Possible Cause

The error may be caused by:

Hyper-V 2012

  • Credentials
    • Incorrect credentials to the VM
    • Insufficient level of permissions
  • VM access:
    • Incorrect Windows firewall configuration inside the VM
  • Integration services:
    • Integration services are not configured properly
  • Windows updates:
    • Not all necessary updates were installed

Hyper-V 2016 and 2019

  • Incorrect VM OS configuration 


Hyper-V 2012

  1. Credentials. Make sure that:
    • You are using the right credentials for the VM.
    • The credentials you are using have administrative permissions.
  2. VM access. Make sure that:
    • Windows firewall allows access to TCP port 9446 from the Director.
  3. Integration services. Check if they are up and running.
  4. Windows updates: Make sure all the necessary Windows updates were installed.

Hyper-V 2016 and 2019

Make sure that the requirements for the application-aware mode are met.

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