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RPC_S_ENTRY_TYPE_MISMATCH
The RPC namespace entry has an unexpected type.
RPC_S_ENTRY_TYPE_MISMATCH is Win32 status 1922 (0x782). The RPC name service stores different logical entry uses, including server bindings, groups, and profiles. An operation that expects one role cannot safely treat an existing entry created for another role as interchangeable, even when the textual entry name is identical.
How entry roles become confused
- deployment reuses one namespace name for both a server binding entry and an RPC group or profile
- cleanup removes and recreates only part of a namespace hierarchy with a different intended type
- two applications independently choose the same default entry name
- migration scripts copy names but not the original entry semantics
- the caller invokes a group, profile, export, or management API against the wrong entry path
Namespace evidence to collect
Record the entry name and syntax, requested RPC operation, expected role, application and interface UUID, existing group/profile/binding inventory, namespace provider, caller identity, and recent create or delete operations. Expand names to their canonical form before comparing. Internal RPC namespace paths can reveal service topology, so keep them in restricted operational logs.
How to diagnose the type conflict
Inspect the existing entry through supported name-service inquiry APIs and determine how it was created. Compare the failing operation with the corresponding group, profile, or binding API contract. Verify that aliases and default-entry settings do not direct the caller to another application’s entry.
Review deployment ownership of the namespace prefix. If different components write the same name, stop concurrent modification before correcting it. Do not delete the entry until all bindings, members, and profiles depending on it have been inventoried.
Correction and namespace design
Use an entry whose established role matches the operation, or remove and recreate the conflicting entry during a coordinated migration after its dependencies are drained. Give applications distinct namespace paths for server exports, groups, and profiles.
Provisioning should verify entry semantics before updating content and should fail safely on a mismatch rather than coercing the entry. Store namespace ownership and intended role in deployment configuration so cleanup routines use the proper RPC APIs.
Difference from an entry that is absent
RPC_S_ENTRY_NOT_FOUND means the named entry does not exist. Error 1922 means an entry does exist, but its role is incompatible with the requested operation; recreating blindly can destroy valid data owned by another component.
Example
A service installer chooses the same RPC namespace path that an older product uses as a group. Its binding export expects a server entry and receives 1922. Assigning a product-specific export path resolves the collision without deleting the older group.
References
- Microsoft: System Error Codes (1700–3999)
- Microsoft: RPC return values
- Microsoft: RPC name-service database
- Microsoft: RpcNsBindingExport
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