Failed to create snapshot (Microsoft Software Shadow Copy provider 1.0) (mode: Veeam application-aware processing)

Question

These are the two error messages I am receiving on back up failure in Veeam.

14/02/2023 3:34:13 PM :: Unable to allocate processing resources. Error: Writer 'Microsoft Hyper-V VSS Writer' is failed at 'VSS_WS_FAILED_AT_PREPARE_SNAPSHOT'.

The writer experienced a non-transient error. If the backup process is retried,

the error is likely to reoccur.

--tr:Failed to verify writers state.

--tr:Failed to perform pre-backup tasks.

14/02/2023 3:21:21 PM :: Failed to create snapshot (Microsoft Software Shadow Copy provider 1.0) (mode: Veeam application-aware processing) Details: Writer 'Microsoft Hyper-V VSS Writer' is failed at 'VSS_WS_FAILED_AT_PREPARE_SNAPSHOT'.

The writer experienced a non-transient error. If the backup process is retried,

the error is likely to reoccur.

--tr:Failed to verify writers state.

--tr:Failed to perform pre-backup tasks.

After back up job runs the Microsoft Hyper-V VSS Writer fails on the Host
[

](https://learn-attachment.microsoft.com/api/attachments/165bc2d1-ed37-4158-977c-fe9d553e9bc6?platform=QnA"/api/attachments/321bbb85-7466-4e4d-b6f1-dce607a5ec8c?platform=QnA" alt="User's image" />

I've checked the guests volume properties and confirmed that the shadow copies section match the storage area.

I was able to create shadow copies of each volume without issues on the guest.

I've tried rebooting both Guest(rebooted guest multiple times trying different fixes) and Host

Event Log on Host: Event ID 8229
[

](https://learn-attachment.microsoft.com/api/attachments/39938651-6516-4d82-babf-035a0fd87a62?platform=QnA"https://learn-attachment.microsoft.com/api/attachments/3ceff8a9-387b-44a4-9dfb-7fda2e6f54e9?platform=QnA" alt="" />

](https://learn-attachment.microsoft.com/api/attachments/3ceff8a9-387b-44a4-9dfb-7fda2e6f54e9?platform=QnA

Answer 1

Hi. Thank you for your question and reaching out. I’d be more than happy to help you with your query

It sounds like you are having issues creating a snapshot using Microsoft Software Shadow Copy provider 1.0. This could be caused by several things, so it's important to try to narrow down the cause of the problem.

First, make sure you have the latest version of the Microsoft Software Shadow Copy provider installed on your system. Then, check that all other applications that are using the Microsoft Software Shadow Copy provider are up to date as well, and that any necessary updates have been installed.

Additionally, it is important to check that the application you are using to create the snapshot is properly configured and running in the correct mode. If the application is not set up correctly, it can cause the snapshot to fail. You can also try restarting the application to see if that resolves the problem.

Finally, if the issue persists, it may be necessary to contact Microsoft Support for further assistance in resolving the issue. I hope this helps you get your snapshot working properly!

If the reply was helpful, please don’t forget to upvote or accept as answer, thank you.