| Previous | Next |
| OLE_E_ADVISENOTSUPPORTED | OLE_E_NOCONNECTION |
TAPI_E_NOTSUPPORTED
TAPI_E_NOTSUPPORTED: diagnose the owning boundary
TAPI_E_NOTSUPPORTED (0x80040003) is documented as This method is not supported. Treat that wording as the specific TAPI provider capability boundary; it is more useful than a generic “component failed” label.
Evidence that matters
Record line/provider identity, API operation, negotiated TAPI version and requested feature. Query capabilities on that same provider and avoid treating an unsupported operation as a transient line failure.
Interpretation and verification
Keep the affected object and caller identity stable while changing only the rejected prerequisite. The correction is proven when the original operation crosses this boundary with the intended state or output. If a different HRESULT appears afterward, preserve it as a separate later-stage result rather than folding it back into TAPI_E_NOTSUPPORTED.
Technical references
Looking for a different code? Search another status or error code.