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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
  • 7 comments
  • 44 views
E

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

    7 comments

    lukas.k
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    • lukas.k
    • 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

    LK | Enterprise Architect @ Veeam Software | Former Veeam Vanguard | Security Specialist
      E
      • er_mat
      • 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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        • eblack
        • Experienced User
        • March 4, 2026

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

         

         

          lukas.k
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          • lukas.k
          • 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!

          LK | Enterprise Architect @ Veeam Software | Former Veeam Vanguard | Security Specialist
            kciolek
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            • kciolek
            • Experienced User
            • March 4, 2026

            please keep us updated on progess with support!

            Ken Ciolek | SHI Labs Data Protection & Storage Lead | Object First Ace | Commvault Global Ambassador
            E
            • er_mat
            • Author
            • New Here
            • March 6, 2026

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

             

             

            Yes but with the next run after the full backup, the error message applies again.

              eblack
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              • eblack
              • Experienced User
              • March 6, 2026

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

               

               

              Yes but with the next run after the full backup, the error message applies again.

              I’d rescan the repo and attempt to clone the job (if you have the ability), then run the Active Full once again.

               

              Otherwise I might look into this. 

               

              https://helpcenter.veeam.com/docs/vbr/userguide/backup_validator_validate.html?ver=13

               

               

               

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