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OSS_FATAL_ERROR
OSS_FATAL_ERROR (0x80093012) is an OSS ASN.1 runtime result for unrecoverable internal runtime state. The codec reports a serious internal failure, commonly after memory corruption or a broken generated/runtime combination. Because first failure in the process, not only the final HRESULT 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 full dump with loaded modules and symbols, then separate the encoded value from generated artifacts, call arguments, and the runtime package actually loaded by the process.
Neighboring statuses: OSS_FATAL_ERROR
Do not classify FATAL_ERROR as ordinary invalid input unless a minimal malformed sample reproducibly triggers it without prior corruption.
What the return code narrows down
At the unrecoverable internal runtime state 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 recent writes near codec control and value objects; otherwise an outer certificate or security wrapper may hide the useful codec result behind a generic failure.
Test one variable at a time
- Reproduce in a clean process with one PDU
- run memory diagnostics before retry loops
- Verify generated files and runtime version as a set
Build a useful capture
- first failure in the process, not only the final HRESULT
- full dump with loaded modules and symbols
- recent writes near codec control and value objects
Instrumentation
Where first failure in the process, not only the final HRESULT can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use full dump with loaded modules and symbols together with OSS module paths and versions logged once per process so packaging differences can be correlated without flooding normal diagnostics.
Verify the repair: the result
Resolve the underlying corruption or binary mismatch and require repeated clean-process success.
Technical references
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