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Veeam Agent for Windows fails to create backup - stuck at 0% (VSS snapshot issue

  • October 1, 2026
  • 3 comments
  • 14 views

Hi,

My Veeam Agent for Windows backup is stuck at 0% on snapshot creation.

When I run vssadmin list providers in PowerShell, no providers are listed. It seems the default Microsoft VSS provider is missing or unregistered.

What is the proper procedure to re-register the VSS provider without corrupting existing shadow copies ?

Thanks !

      3 comments

      Chris.Childerhose
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      • Chris.Childerhose
      • Veeam Legend, Veeam Vanguard
      • October 1, 2026

      First off what version of Windows is this on?  Did you check Google?

      You can use this article but with caution - Re-Registering VSS DLL Binaries in 32-bit and 64-bit Environments

      Chris Childerhose (Enterprise Architect) - VMCE+ | VMCA | VMCE | VMCE-SP | Veeam Vanguard 8* | Veeam Legend 5* | VUG Canada Leader | vExpert 7* | Toronto VMUG Leader | VCAP-DCV/VCP-DCV/VCP-VVF | Object First Ace | Cisco Champion | Twitter: @cchilderhose | Blog Site – https://just-virtualization.tech
      coolsport00
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      • coolsport00
      • Veeam Legend
      • October 1, 2026

      Yep...recommend following the process Chris shared to attempt to re-register your Windows VSS as a first step, then re-attempt a backup. Let us know how it goes ​@japanon 

      Shane Williford - Veeam VMCA/VMCE+ | Veeam Legend | VUG Leader | VCP-DCV | Twitter: @coolsport00
      Jason Orchard-ingram micro
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      hi ​@japanon  before running Veeam again

      look at Event Viewer. Check the Application log for VSS and VolSnap errors.
      Create a test shadow copy with DiskShadow, as described in KB1980
      check Service startup types. KB1785

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