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| WDSTPC_E_MULTISTREAM_NOT_ENABLED | WDSTPC_E_CLIENT_DEMOTE_NOT_SUPPORTED |
WDSTPC_E_ALREADY_IN_LOWEST_SESSION
WDSTPC_E_ALREADY_IN_LOWEST_SESSION is a boundary condition in WDS multistream slow-client handling. Multistream moves slow clients to lower-speed streams within the same multicast transmission; once the client reaches the lowest stream, another demotion request has no lower target.
Treat the lowest stream as the end of the demotion ladder
- Inspect the server multistream policy and configured maximum stream count for the transmission.
- Record the client/session identity and the management action that requested another demotion.
- Use the configured slow-client fallback/handling policy to decide what happens if the client still degrades the lowest stream.
This code differs from “multistream not enabled” and “client demotion not supported.” The feature is active and the client is already participating in its lowest available stream. Automation should avoid repeatedly issuing demote commands against the same client. Microsoft documents that slow-client policy can disconnect a client or instruct fallback when appropriate; that policy, rather than another impossible demotion, determines the next administrative action.
WDS multistream handling · MultistreamStreamCount · Multicast session policy
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