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OSS_PER_DLL_NOT_LINKED
OSS_PER_DLL_NOT_LINKED (0x8009302B) is an OSS ASN.1 runtime result for Packed Encoding Rules codec DLL absent. The requested PER operation cannot start because the modular runtime lacks the component implementing aligned or unaligned Packed Encoding Rules. Because aligned versus unaligned PER selection is central to this condition, Microsoft’s HRESULT range and the OSS Nokalva return-code documentation should be read together. Start the investigation by recording PER module loader status, then separate the encoded value from generated artifacts, call arguments, and the runtime package actually loaded by the process.
Interpretation at runtime
At the Packed Encoding Rules codec DLL absent boundary, capture the first OSS function returning the value and note whether the operation was encode, decode, copy, compare, constraint validation, or trace setup. Preserve the selected PDU, encoding rules, and schema and generated code version; otherwise an outer certificate or security wrapper may hide the useful codec result behind a generic failure.
Diagnostic record
- aligned versus unaligned PER selection
- PER module loader status
- schema and generated code version
Small experiments with high signal
- round-trip a minimal constrained integer
- Compare bit length with an independent PER implementation
- Verify alignment mode at both endpoints
Avoid the wrong workaround: the result
Falling back to BER changes the wire format completely and cannot preserve interoperability with a PER protocol.
Instrumentation
Where aligned versus unaligned PER selection can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use PER module loader status together with OSS module paths and versions logged once per process so packaging differences can be correlated without flooding normal diagnostics.
Proof of recovery: the result
Deploy PER support generated for the same schema and verify both boundary values and bit alignment.
Technical references
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