R&D Forums - Veeam Forums

Jun 5, 2019
Behavioral Science and Innovation

Welcome to R&D Forums, your ultimate resource for all things related to Veeam Forums and troubleshooting tips for Microsoft Hyper-V. If you've been struggling with the notorious VSS_WS_FAILED_AT_PREPARE_SNAPSHOT problem, you've come to the right place. Our dedicated community of experts is here to help you find effective solutions and overcome this issue.


Let's dive into the details of the VSS_WS_FAILED_AT_PREPARE_SNAPSHOT problem and its implications. This error typically occurs when attempting to create a VSS snapshot for backup purposes in a Microsoft Hyper-V environment. The failure at the prepare snapshot stage can lead to disruptions in the backup process, preventing successful data recovery or backup completion.

Possible Causes

Several factors can contribute to the VSS_WS_FAILED_AT_PREPARE_SNAPSHOT problem. It could be related to VSS service failures, conflicts with other backup software or applications, disk space limitations, or even corrupted VHD files. Identifying the specific cause is crucial to implementing the appropriate resolution.


1. Restart VSS Services

One common solution is to restart the Volume Shadow Copy Service (VSS) and related services. This can be done through the Command Prompt using administrative privileges. By restarting the VSS services, you may be able to resolve any underlying issues that were causing the failure at the prepare snapshot stage.

2. Check for Software Conflicts

Another possibility is conflicts with other backup software or applications installed on the Hyper-V host. It's vital to ensure that there are no conflicting software or backup processes running simultaneously, as they can interfere with the VSS snapshot creation. Temporarily disabling or uninstalling conflicting software might help resolve the issue.

3. Verify Sufficient Disk Space

Insufficient disk space can also trigger the VSS_WS_FAILED_AT_PREPARE_SNAPSHOT problem. Ensure that you have adequate free space on the drives involved in the backup process. Clear unnecessary files or allocate additional storage if required to ensure a successful snapshot creation.

4. Check and Repair VHD Files

In some cases, corrupted VHD (Virtual Hard Disk) files may contribute to the issue. Use tools like Hyper-V Manager or PowerShell commands to check the integrity of VHD files and repair any inconsistencies detected. This step may involve creating a fresh VHD or restoring from a previous known working backup.

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Why Choose R&D Forums?

1. Expert Advice

Our community includes experienced professionals who are well-versed in Veeam and Microsoft Hyper-V technologies. Benefit from their expertise and receive expert advice tailored to your specific needs.

2. Comprehensive Discussions

Our forums are a treasure trove of comprehensive discussions on a wide range of topics. Find solutions, troubleshooting tips, and best practices shared by fellow users, ensuring you have access to the latest knowledge and insights.

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At R&D Forums, we have a vibrant and active community ready to assist you. Engage in conversations, connect with like-minded individuals, and build valuable professional relationships.

4. Stay Updated

Stay up-to-date with the latest industry trends, Veeam product updates, and Microsoft Hyper-V advancements. Our community is constantly sharing news, updates, and valuable resources to keep you ahead of the curve.


Don't let the VSS_WS_FAILED_AT_PREPARE_SNAPSHOT problem hinder your backup and recovery efforts. With R&D Forums and ClubMaxSEO, you have access to a wealth of information, expert advice, and a supportive community that will guide you towards resolving this notorious issue. Join us today and take your Veeam and Microsoft Hyper-V skills to new heights!

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