HRESULT 0xC121025B (EVT_WDSMCS_E_CP_DLL_LOAD_FAILED

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Description:

A critical content provider did not initialize.

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EVT_WDSMCS_E_CP_OPEN_CONTENT_FAILED	EVT_WDSMCS_E_NSREG_START_TIME_IN_PAST

EVT_WDSMCS_E_CP_DLL_LOAD_FAILED_CRITICAL

EVT_WDSMCS_E_CP_DLL_LOAD_FAILED_CRITICAL is a Windows Deployment Services (WDS) Multicast Server result. It indicates that a provider marked critical failed during load or initialization and WDS Multicast Server must stop or remain unavailable.

What to check

Prioritize the provider load or initialization error reported immediately before this event.
Verify the critical provider DLL, dependencies, registration, and compatible server version.
Do not attempt to operate affected multicast namespaces until the critical provider initializes cleanly.

Microsoft documentation on the Windows Deployment Services Multicast Application Protocol

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