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Error message Backup Copy Job "Failed to perform backup verification Error: Unable to get block digest: block is not initialized. "

  • February 27, 2026
  • 5 comments
  • 28 views

Hello everyone,

For several days now, I have been receiving the following error message during our backup copy job:

“Failed to perform backup verification Error: Unable to get block digest: block is not initialized. Skipped arguments: [0]; Agent failed to process method {Signature.FullRecheckBackup}.”

I performed a full backup, but unfortunately the same error message appeared again. The copy job does not conflict with the backup job.

How can I fix this error?

Thanks in advance!

Version: Backup & Replication 12, Build: 12.3.2.4165

5 comments

lukas.k
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  • Influencer
  • February 27, 2026

Hi ​@er_mat,

Welcome to the community!

To assist with this we do need a few more information. You have a copy job - what are your source backups (e.g. VM backups from vSphere, Hyper-V etc.)? What is your target repository for the copy job? Have there been any changes in the past days / weeks that could cause this? What Veeam version are you running?

 

In general, we are a community but cannot provide technical support in depth. In this specific case I strongly recommend to open a Veeam support ticket, they can help on a deeper level then we can do.

Anyways, please do not hesitate to update us on the topic, we are always happy to be of assistance.

 

Best regards

Lukas


  • Author
  • New Here
  • March 4, 2026

Hi Lukas, thank you for your response.

The source backup type is a hyper-v-backup. The target is a nas.

There was no changes in the last time.

The Veam-Version: Backup & Replication 12, Build: 12.3.2.4165

What is the meaning of the error-message: “Unable to get block digest: block is not initialized”

“Agent failed to process method {Signature.FullRecheckBackup}.”

Kind regard ermat 


eblack
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  • Experienced User
  • March 4, 2026

Have you run a new Active Full yet with the source data?

 

 


lukas.k
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  • Influencer
  • March 4, 2026

Thank you for the update. I’d recommend to open a Veeam support case to continue here.

 

Please feel free to keep us posted!


kciolek
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  • Experienced User
  • March 4, 2026

please keep us updated on progess with support!