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STATUS_HV_INVALID_CONNECTION_ID
The connection handle cannot be resolved before message delivery
STATUS_HV_INVALID_CONNECTION_ID means the supplied connection identifier is not valid for the hypervisor operation. In the message-posting path, Hyper-V uses the connection to locate a destination port; no message can be queued until that resolution succeeds.
Keep this separate from STATUS_HV_INVALID_PORT_ID. A connection can be invalid because it was never created, was deleted, belongs to a different context, or is stale; an invalid port status says a connection resolved but its destination is unusable for the operation.
What to verify
- Connection creation result, owner, ID lifetime and deletion event.
- The destination port and partition recorded when the connection was created.
- Whether a reconnect path retains IDs from a previous endpoint instance.
- Synchronization between sender teardown and outstanding message submissions.
References
- Microsoft: HvCallPostMessage
- Microsoft: virtual interrupt controller and SynIC
- Linux source: Hyper-V integration-service messaging
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