What does HRESULT 0xC1210302 (EVT_WDSMCS_E_NSREG_NAMESPACE_EXISTS) mean?

 
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EVT_WDSMCS_E_NSREG_CONTENT_PROVIDER_NOT_REG EVT_WDSMCS_E_NSREG_FAILURE

EVT_WDSMCS_E_NSREG_NAMESPACE_EXISTS

EVT_WDSMCS_E_NSREG_NAMESPACE_EXISTS is a Windows Deployment Services (WDS) Multicast Server result. It indicates that namespace registration collided with an existing namespace of the same name on the WDS Multicast Server.

What to check

  • Enumerate namespaces and compare their configuration before deciding whether the existing one can be reused.
  • Use unique naming or an explicit replace workflow rather than repeated create requests.
  • Prevent parallel deployment jobs from registering the same namespace at the same time.

Microsoft documentation on the Windows Deployment Services Multicast Application Protocol


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