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OLE_E_ADVF
OLE advisory flags are invalid
OLE_E_ADVF is HRESULT 2147745793 (0x80040001) from winerror.h. The documented description is “Invalid advise flags” The result belongs to IOleObject, IDataObject, or cache advisory connection setup. This HRESULT is most useful when tied to the method and lifecycle phase where the ADVF bit set is unknown or incompatible with the requested advise operation.
This result means that the ADVF bit set is unknown or incompatible with the requested advise operation. Preserve the original HRESULT and the state that made this condition true; the severity bit alone does not determine how the caller should handle it.
Where the result appears
An incident record must distinguish caller, runtime, provider, and backing resource while testing whether the ADVF bit set is unknown or incompatible with the requested advise operation.
Typical causes and interpretation
The immediate contract boundary is specific: the ADVF bit set is unknown or incompatible with the requested advise operation. Common cause branches include the following:
- Flags from different advise APIs were mixed.
- Mutually incompatible notification options were combined.
- A caller passed uninitialized flag bits.
Confirm the cause branch that explains why the ADVF bit set is unknown or incompatible with the requested advise operation by using call arguments, object state, metadata, device information, or provider traces.
Correct handling and recovery
The primary recovery is to build the ADVF value from the documented options for that specific advise method and recreate the connection. The failure report should capture the relevant state during IOleObject, IDataObject, or cache advisory connection setup so it is clear why the ADVF bit set is unknown or incompatible with the requested advise operation.
The owner of it must define idempotency, cancellation, attempt limits, and reconciliation for the failed IOleObject, IDataObject, or cache advisory connection setup.
Practical scenario
A data consumer passes ADVF_DATAONSTOP to an object-advise method where it is not defined, and the connection is rejected.
Difference from related HRESULTs
OLE_E_ADVISENOTSUPPORTED means the object does not support advising; it means the requested advise flags are invalid.
Developer and administrator guidance
Broad permission or compatibility changes are inappropriate unless evidence for the ADVF bit set is unknown or incompatible with the requested advise operation points to that layer.
References
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