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RPC_NT_TYPE_ALREADY_REGISTERED
RPC_NT_TYPE_ALREADY_REGISTERED is an NTSTATUS value used by the Windows RPC runtime. RPC manager types associate object-specific dispatch with a type UUID. This status means the runtime already contains the manager type being registered. The duplicate is therefore at the type-registration layer, not necessarily at the individual object-registration layer.
Compare this with RPC_NT_ALREADY_REGISTERED, which is about an object UUID. A system can legitimately have multiple objects of one manager type, but it cannot blindly repeat the same manager-type registration in the same runtime context.
A manager type registration was attempted twice
- Record the manager type UUID, the interface it serves and the module that performs the registration.
- Verify initialization ordering across plug-ins or service reload paths that share one RPC runtime process.
- Keep type registration and object registration in separate logs; collapsing them hides the reason for this status.
References
- Microsoft: RPC return values
- Microsoft: Server-side binding
- The Open Group: DCE 1.1 RPC specification
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