| Previous | Next |
| WDSMCS_E_SESSION_SHUTDOWN_IN_PROGRESS | WDSMCS_E_INCOMPATIBLE_VERSION |
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.
for it, Microsoft documentation on the Windows Deployment Services Multicast Application Protocol
Diagnostic interpretation
This result has the HRESULT value 0xC1210101. AllStat records the condition as “The Content Provider did not register required callbacks.”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the wdsmcs / reqcallbacks / reg operation.
- Preserve the first failure in the call chain; a later HRESULT can describe cleanup rather than the original wdsmcs / reqcallbacks / reg condition.
Retry and recovery
” has changed.
Looking for a different code? Search another status or error code.