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Do you have the latest VSS updates/fixes installed on the VMs and on Hyper-V Hosts.?Please have a look at suggestions - options here <a href="https://social.technet.microsoft.com/Forums/en-US/606ee8fb-f58c-454d-a695-61158bcb71e7/error-hyperv-vss-writers-inconsistent-shadow-copy?forum=winserverhyperv" id="isPasted" rel="ugc nofollow">https://social.technet.microsoft.com/Forums/en-US/606ee8fb-f58c-454d-a695-61158bcb71e7/error-hyperv-vss-writers-inconsistent-shadow-copy?forum=winserverhyperv</a>&nbsp;for a similar issue that you're facing.
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Do you have the latest VSS updates/fixes installed on the VMs and on Hyper-V Hosts.?

Please have a look at suggestions - options here https://social.technet.microsoft.com/Forums/en-US/606ee8fb-f58c-454d-a695-61158bcb71e7/error-hyperv-vss-writers-inconsistent-shadow-copy?forum=winserverhyperv [https://social.technet.microsoft.com/Forums/en-US/606ee8fb-f58c-454d-a695-61158bcb71e7/error-hyperv-vss-writers-inconsistent-shadow-copy?forum=winserverhyperv] for a similar issue that you're facing.

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Good Morning lcohan, I can cofirm that the latest vss updates have been applied to both the vm and the hyper-v hosts.&nbsp;
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Good Morning lcohan,




I can cofirm that the latest vss updates have been applied to both the vm and the hyper-v hosts. 

Manager of Information Technology & Office Administration

Tim Edwards

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I am not sure what happened but I no longer can back up one of my SQL Servers. We use veeam for our backup product, but I cannot even to a checkpoint in Hyper-V it fails as well. When I check the vssadmin writers, I see that the SQLServerWriter is failing with the below information: State: [8]FailedLast Error: Inconsistent shadow copy <a href="https://filedb.experts-exchange.com/incoming/2022/10_w43/1604128/1666190906487.png" rel="ugc"><img src="https://filedb.experts-exchange.com/incoming/2022/10_w43/1604128/1666190906487.png" style="width: 150px;" class="fr-fic fr-dib"></a> Things that I have done so far to try and remedy the situation based on my research: 1. Cycled the the VSS Services - did not fix2. Full reboot of the server - did not fix3. Changed logon on the SQLServerWriter from Local System to the local administrator account - did not fix 
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1666190906487.png


I am not sure what happened but I no longer can back up one of my SQL Servers. We use veeam for our backup product, but I cannot even to a checkpoint in Hyper-V it fails as well.
When I check the vssadmin writers, I see that the SQLServerWriter is failing with the below information:
State: [8]Failed
Last Error: Inconsistent shadow copy
Things that I have done so far to try and remedy the situation based on my research:
1. Cycled the the VSS Services - did not fix
2. Full reboot of the server - did not fix
3. Changed logon on the SQLServerWriter from Local System to the local administrator account - did not fix

SQL Server unable to backup or create checkpoints on Hyper-V SQLServerWriter Fails

Microsoft SQL Server is a suite of relational database management system (RDBMS) products providing multi-user database access functionality.SQL Server is available in multiple versions, typically identified by release year, and versions are subdivided into editions to distinguish between product functionality. Component services include integration (SSIS), reporting (SSRS), analysis (SSAS), data quality, master data, T-SQL and performance tuning.

Microsoft SQL Server

Hyper-V is a native hypervisor; it can create virtual machines on x86-64 systems and supersedes Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks. Hyper-V Server supports remote access via Remote Desktop Connection. Administration and configuration of the host OS and the guest virtual machines is generally done over the network.

Hyper-V

Veeam® has pioneered a new market of Availability for the Always-On Enterprise™ by helping organizations meet recovery time and point objectives (RTPO™) of less than 15 minutes for all applications and data. Veeam develops backup, disaster recovery and virtualization management software for VMware and Hyper-V virtual environments. The company focuses on products that help with virtualized workloads, reduce downtime, and ensure the system Availability required by service-level agreements.

Veeam

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.