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SL_E_SFS_BAD_TOKEN_EXT
What this Software Protection result isolates
Keep the symbolic result SL_E_SFS_BAD_TOKEN_EXT together with HRESULT 0x8004E105. The producer is the serialized Token Store file format; at the low-level reader/writer that validates the Token Store container, descriptor table, token records and transaction state before licenses can be evaluated, Windows determined that a token record carries an unsupported or malformed extension/type suffix.
This result already rules out several broad guesses: this concerns token type classification, not the token’s base name or cryptographic hash. Preserve its operation name, product instance and timestamp so a later retry does not hide the original failure.
Checks in the useful order
- Record this result,
0x8004E105, the exact API or service operation, and the affected product or protected object. - Prove the specific condition: record the complete non-secret token identifier, extension bytes, package source and store format version.
- Compare the neighboring results below and identify which condition actually applies.
State to compare on both sides of the failure
- Tokens.dat or the applicable licensing-store file
- store header and format version
- descriptor table and token offsets
- token name, extension, declared size and hash
- file-system result and Software Protection event
Where it sits in the licensing pipeline
A structural Token Store error occurs before an individual product key can be accepted or rejected. To verify this, record the complete non-secret token identifier, extension bytes, package source and store format version.
Why the symbolic code matters
| Result | Different condition |
|---|---|
SL_E_SFS_BAD_TOKEN_NAME | Compared with this result, a serialized token name violates the naming rules expected by the store index. |
SL_E_SFS_DUPLICATE_TOKEN_NAME | Compared with this result, two descriptor entries resolve to the same token name where the store requires uniqueness. |
SL_E_SFS_INVALID_SYNC | Compared with it, a token record does not have a matching or valid synchronization marker at its header and footer. |
What to repair—and what not to reset
Reinstall the originating license package or rebuild the store from supported sources.
Representative case: A package import writes a token extension not understood by the current licensing engine.
Actions that usually destroy useful evidence
- Do not assume a product-key change can repair a malformed container.
- Do not edit or copy individual records inside the signed store.
Technical references
- Rebuild the Tokens.dat file — technical contract for the subsystem producing it.
- Software Licensing provider — official platform context used to interpret it.
- SoftwareLicensingService WMI class — supported state, API or recovery information relevant to this HRESULT.
- Slmgr.vbs options — reference for evidence collection and post-repair verification.
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