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QPARSE_E_INVALID_GROUPING
The grouping type is unsupported
QPARSE_E_INVALID_GROUPING is HRESULT 0x80041677. Windows documents it as “An unsupported grouping type was specified.”
Operation and state
This result belongs to legacy Windows query parsing and is returned while validating how results should be partitioned into categories or ranges. The exact condition is: a newer enum, incompatible property type, unsupported nesting or SQL GROUP BY assumption crosses the legacy capability boundary.
Failure paths to examine
Data to collect first
- Record grouping value before releasing the relevant objects.
- Associate property DBTYPE with the exact UTC timestamp and correlation identifier.
- Compare failing and known-good values for ranges under the same provider or handler version.
- Record the source and normalization path of nesting depth, not only its display form.
- Record final parser input bytes before releasing the relevant objects.
Step-by-step diagnosis
- Capture grouping value and property DBTYPE at the call boundary that returns this result.
- Confirm the operation reached validating how results should be partitioned into categories or ranges with the intended ranges.
- record grouping value, property DBTYPE, ranges, nesting and provider version.
Continuation policy
Use a supported grouping form or bounded client-side presentation grouping. Retrying identical parser bytes cannot succeed; regenerate the specific token or schema pairing that failed.
Limits of this HRESULT
Distinguishing similar results
QUERY_E_INVALIDCATEGORIZE is the broader execution-layer categorization failure.
Developer and administrator guidance
Operational case
A calendar-quarter mode is unavailable in the legacy provider. Capability detection offers supported ranges instead.
Official Microsoft references
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