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ERROR_VID_INVALID_PPM_HANDLE
ERROR_VID_INVALID_PPM_HANDLE is HRESULT 0xC0370018 in the VID parent-partition mapping handle validation area of the Windows virtualization stack. The built-in message names the immediate result; the useful custom context is the exact boundary: an opaque parent partition mapping (PPM) handle used in VID memory operations. Record the first returning operation and host-side event before a management layer retries or translates it.
What the code establishes
The handle is wrong, stale, or belongs to another partition/mapping generation. Preserve how it was created and which child mapping operation consumes it.
Hyper-V architecture documentation identifies VID as the component that provides partition, virtual-processor, and memory-management services., many ERROR_VID_* values describe internal host objects rather than a public API that administrators should call directly. Accordingly, diagnose this result through the named object/state, the VMMS or Worker event chain, and the operation that produced it; do not invent a user-mode VID call from the constant name.
Neighboring result: INVALID_GPA_RANGE_HANDLE and INVALID_MEMORY_BLOCK_HANDLE identify different layers. PPM points to the parent-partition mapping relationship.
Evidence that should survive remediation
| Evidence | Why it changes the diagnosis |
|---|---|
| PPM creation | Record parent and child partition IDs, mapped extent, and returned handle. |
| Consuming operation | Keep the exact map/unmap or page-set request. |
| Generation changes | Note partition reset, migration, teardown, and host service restart. |
| Handle typing | Confirm the token was not serialized or confused with another opaque handle. |
Preserve identifiers and counts without dumping guest secrets or unrelated memory. Useful this result timestamps include the last successful operation, first failure, any automatic retry, and the object-generation change that followed.
Controlled diagnostic sequence
- Keep PPM handles scoped to both parent and child generations.
- Destroy child mappings before releasing the PPM object.
- Reject cross-partition reuse in wrapper code.
- Test parent/child teardown in both orders.
Use a controlled partition or disposable VM when a mapping, lock, or teardown test can be destructive. During the result run, keep page units, GPA boundaries, parent object, handle generation, and release order visible.
Read the comparison tests
Across these controls for it, preserve an opaque parent partition mapping (PPM) handle used in VID memory operations as the boundary under test.
| Control | Interpretation | Hold constant |
|---|---|---|
| Balanced fresh lifecycle — this result | Create, use, release, and destroy one object generation. A different this result exposes leaked references, locks, handles, or mappings. | Preserve sizes and operation order while changing only generation. |
| Same request under lower host pressure — it | If it changes after controlled pressure is removed, quantify host/pool capacity; if not, focus on caller bookkeeping. | Do not modify guest disks or unrelated VM devices during the result comparison. |
| Smaller exact range — it | Reduce only page count or mapped extent. If it moves, range arithmetic, object limits, or reserve capacity is involved. | Keep the same block, GPA base, flags, and partition generation for it. |
Avoid the wrong recovery
Restarting can release the exact lock, reference, mapping, or opaque handle behind it without fixing the lifecycle defect. Before recovering from it, preserve the object graph and acquire/release counts.
A handle observed is generation-bound. Keep its parent partition and object type beside the token; never serialize it, copy it to another partition, or reuse it after the terminal transition.
Acceptance test
The mapping lifecycle uses only current handles and leaves no child reference after parent mapping teardown. Repeat the original operation under the original supported conditions and retain one deliberate negative control. A management command succeeding on a different object is not sufficient to close this incident.
Technical references
These sources define it and the public Hyper-V architecture surrounding the internal state. They do not create a public user-mode VID API for the named object.
- Microsoft Open Specifications: HRESULT values — used to interpret the boundary.
- Microsoft: WHvMapGpaRange — used to interpret the boundary.
- Microsoft: WHP memory data types — used to interpret the boundary.
- Microsoft: Hyper-V architecture — used to interpret the boundary.
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