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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. It applies to an opaque parent partition mapping (PPM) handle used in VID memory operations.
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.
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. |
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 test run, keep page units, GPA boundaries, parent object, handle generation, and release order visible.
Read the comparison tests
| Control | Interpretation | Hold constant |
|---|---|---|
| Balanced fresh lifecycle | Create, use, release, and destroy one object instance. If a different result appears after recreation, investigate leaked references, locks, handles, or mappings. | Preserve sizes and operation order while changing only generation. |
| Same request under lower host pressure | 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 | 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. |
Avoid the wrong recovery
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.
Technical references
- Microsoft Open Specifications: HRESULT values — used to interpret this result.
- Microsoft: WHvMapGpaRange — used to interpret this result.
- Microsoft: WHP memory data types — used to interpret this result.
- Microsoft: Hyper-V architecture — used to interpret this result.
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