Product Version: 10.5
Last Modified: 23 November 2021
Problem
The following error message appears:
Quiesced (application-aware) checkpoint of this VM cannot be created.
Background
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
Solution
Hyper-V 2012
- Credentials. Make sure that:
- You are using the right credentials for the VM.
- The credentials you are using have administrative permissions.
- VM access. Make sure that:
- Windows firewall allows access to TCP port 9446 from the Director.
- Integration services. Check if they are up and running.
- 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.