What does HRESULT 0xC121010D (WDSMCS_E_PACKET_NOT_SIGNED) mean?

 
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WDSMCS_E_PACKET_NOT_SIGNED

WDSMCS_E_PACKET_NOT_SIGNED is a Windows Deployment Services (WDS) Multicast Server result. It indicates that the packet lacks a required signature and therefore cannot pass the configured authenticity check.

What to check

  • Verify that the namespace security policy requires signing and that the content provider signs outgoing packets.
  • Confirm certificate, key, and provider configuration are available to the component producing the packet.
  • Check client compatibility before enabling a security mode not supported by all intended receivers.

Microsoft documentation on the Windows Deployment Services Multicast Application Protocol


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