#1 Global Leader in Data Resilience

Hardware VSS Provider Is Missing in Hyper-V VSS Provider Settings

KB ID: 1861
Product: Veeam Backup & Replication | 7.0 | 8.0 | 9.0 | 9.5 | 10 | 11 | 12 | 12.1 | 12.2
Published: 2014-04-02
Last Modified: 2023-04-04
mailbox
Get weekly article updates
By subscribing, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.

Cheers for trusting us with the spot in your mailbox!

Now you’re less likely to miss what’s been brewing in our knowledge base with this weekly digest

error icon

Oops! Something went wrong.

Please, try again later.

Challenge

Backups using a specific hardware provider do not work, provider is missing from the user interface:

User-added image

Cause

During a Hyper-V host rescan, available VSS providers are enumerated via a VSS API query. Then, all VSS volumes for which those providers can be used are retrieved.

In some rare scenarios, the results from the VSS API query may be inaccurate. In such cases, the registry value in the solution can override this VSS API compatibility check and allow the user to select any available VSS provider. However, using that provider may still fail if it turns out that the VSS provider is not actually compatible.

Solution

To override the VSS provider compatibility check and force Veeam Backup & Replication to display all available hardware VSS providers, create the following registry value on the Veeam Backup & Replication server:

Key Location: HKLM\SOFTWARE\Veeam\Veeam Backup and Replication\
Value Name: UIShowAllVssProvidersForVolume
Value Type: DWORD (32-bit) Value
Value Data: 1

The registry value will be automatically detected and become effective within 15 minutes. Rescan the Hyper-V host again, and the complete list of VSS providers should be available.

More Information

Please note that this registry value disables the advanced compatibility detection algorithm, which automatically selects the best compatible VSS provider. Therefore, it should only be created in situations where it is necessary.
To submit feedback regarding this article, please click this link: Send Article Feedback
To report a typo on this page, highlight the typo with your mouse and press CTRL + Enter.

Spelling error in text

This site is protected by hCaptcha and its Privacy Policy and Terms of Service apply except as noted in our Privacy Policy.
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

Oops! Something went wrong.

Please, try again later.

You have selected too large block!

Please try select less.

KB Feedback/Suggestion

This form is only for KB Feedback/Suggestions, if you need help with the software open a support case

By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Notice.
This site is protected by hCaptcha and its Privacy Policy and Terms of Service apply except as noted in our Privacy Policy.
Verify your email to continue your product download
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

error icon

Oops! Something went wrong.

Please, try again later.