What does HRESULT 0xC1210107 (WDSMCS_E_NAMESPACE_ALREADY_EXISTS) mean?

 
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WDSMCS_E_NAMESPACE_ALREADY_EXISTS

WDSMCS_E_NAMESPACE_ALREADY_EXISTS is a Windows Deployment Services (WDS) Multicast Server result. It indicates that namespace creation collided with an existing namespace on the WDS Multicast Server.

What to check

  • Enumerate namespaces and compare the existing name, content provider, and configuration before creating another one.
  • Treat the create request as idempotent only after confirming that the existing namespace is equivalent.
  • Coordinate parallel provisioning jobs so they cannot register the same namespace simultaneously.

Microsoft documentation on the Windows Deployment Services Multicast Application Protocol


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