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OSS_MEM_MGR_DLL_NOT_LINKED
OSS_MEM_MGR_DLL_NOT_LINKED (0x80093026) is an OSS ASN.1 runtime result for OSS memory-manager DLL absent. The runtime configuration expects its optional memory-management component, but the module cannot be loaded. Because allocator callbacks and selected memory mode 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 module architecture and dependency chain, then separate the encoded value from generated artifacts, call arguments, and the runtime package actually loaded by the process.
What the return code narrows down
At the OSS memory-manager 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 allocation/free ownership across DLL boundaries; otherwise an outer certificate or security wrapper may hide the useful codec result behind a generic failure.
Test one variable at a time
- reproduce with the documented default allocator
- trace every allocation and matching free in a test
- check that one CRT does not free another module’s block
Build a useful capture
| Record | Diagnostic value |
|---|---|
| allocator callbacks and selected memory mode | Locates the concrete message, allocation, module, or API boundary |
| module architecture and dependency chain | Separates payload-dependent behavior from build and process state |
| allocation/free ownership across DLL boundaries | Makes the comparison reproducible without rewriting the original artifact |
Neighboring statuses: the result
Substituting arbitrary allocation functions can create cross-module ownership faults even when allocation itself succeeds.
Keep the original bytes or object graph unchanged while testing reproduce with the documented default allocator. A change in module architecture and dependency chain after reload, plugin replacement, restart, or schema deployment is evidence about runtime state, not permission to discard the reproducer. When allocation/free ownership across DLL boundaries points to one message, retain a cryptographic hash and the smallest safe sample instead of logging certificate, subscriber, credential, or private-key material.
Instrumentation
Record the full 32-bit HRESULT and lower OSS return number together with operation direction, symbolic PDU, encoding rule, byte count, and generated-table identifier. Where allocator callbacks and selected memory mode can expose sensitive content, a hash plus a bounded structural excerpt is safer than the complete payload. Use module architecture and dependency chain together with OSS module paths and versions logged once per process so packaging differences can be correlated without flooding normal diagnostics.
Decision matrix
| Controlled observation | Conclusion it supports |
|---|---|
| reproduce with the documented default allocator | A changed outcome isolates the first proposed control instead of a blind retry |
| allocator callbacks and selected memory mode differs between success and failure | The difference localizes the OSS memory-manager DLL absent boundary before unrelated settings are changed |
| An independent decoder accepts the same artifact | Inspect generated schema, selected rules, ABI, and optional OSS modules before declaring the bytes invalid |
| A fresh control object changes the outcome | Investigate initialization, lifecycle, allocator ownership, configuration mutation, and concurrent access |
Verify the repair: the result
Deploy the matching memory manager or configure one documented allocator contract for the entire value lifecycle. A recovery test built around reproduce with the documented default allocator should replay the same operation under the same schema and encoding rule, retain one deliberately invalid control, and verify ownership and cleanup after both outcomes. Success after an unexamined retry is not proof that allocator callbacks and selected memory mode now satisfies the codec contract.
Technical references
- Microsoft: OSS ASN.1 HRESULT definitions
- OSS Nokalva: encoder/decoder return codes
- OSS Nokalva: runtime functions and control initialization
- Relevant ASN.1 specification or runtime detail
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