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WDSMCS_E_REQCALLBACKS_NOT_REG
WDSMCS_E_REQCALLBACKS_NOT_REG is a Windows Deployment Services (WDS) Multicast Server result. It indicates that provider initialization completed without registering callbacks required by the multicast server.
What to check for WDSMCS_E_REQCALLBACKS_NOT_REG
- Check the provider initialization path and verify each required callback registration succeeds.
- Confirm that the provider was built against an interface version compatible with the target server.
- Inspect the provider-specific error returned before this result instead of retrying registration blindly.
Microsoft documentation on the Windows Deployment Services Multicast Application Protocol
Diagnostic discriminator: Verify that the required WDS multicast callbacks were registered before the operation that depends on them. This status is callback registration state, not a multicast-address or provider-DLL failure.
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