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SL_E_TAMPER_DETECTED
0xC004F027 is represented by SL_E_TAMPER_DETECTED. In local Windows Software Protection Platform the specific outcome is that the Software Protection Platform detected tampering in protected licensing state. The phrase local Software Protection tamper detected narrows the first diagnostic record to trusted-store events, file integrity results and modification history.
Why this HRESULT is specific
The local platform evaluates a graph of product instances, licenses, policy and protected state. The returning object and earliest event determine whether the failure occurred while loading prerequisites, authorizing a right, changing service state or committing status.
The decisive question is whether the recorded evidence supports the reported condition that the Software Protection Platform detected tampering in protected licensing state. Keep evidence tied to the failing operation.
Controlled troubleshooting sequence
- Locate the exact object: Use the primary record to identify the transaction or licensed object that actually returned this result.
- Preserve the first decision: Record the earliest event stating that the Software Protection Platform detected tampering in protected licensing state, together with the code, UTC time, and the same identity fields.
- Change one prerequisite: Restore protected windows and licensing components from trusted sources; do not combine this with a store reset, key replacement, account removal, package reinstall, or unrelated repair.
- Repeat the user operation: Re-run the original operation and require that the original operation succeeds; if another HRESULT appears, diagnose it as a new boundary.
Evidence that can change the diagnosis
- Primary record: trusted-store events, file integrity results and modification history.
- Object correlation: keep the product, account, package, device, key, or API identity associated with trusted-store events, file integrity results and modification history beside the first timestamped result.
- Neighboring-state control: use a controlled comparison that tests whether tamper detection is not equivalent to ordinary license expiration or missing activation; this separates the named condition from a nearby status.
- Before/after result: retain the outcome before and after the corrective action “restore protected windows and licensing components from trusted sources”; keep the same identifiers until the original operation succeeds.
How to distinguish nearby failures
The key comparison is this: Tamper detection is not equivalent to ordinary license expiration or missing activation. A valid local Software Protection tamper detected test keeps trusted-store events, file integrity results and modification history attached to the same object and varies one supported prerequisite.
Evidence-preserving cautions
While investigating this result, do not delete Tokens. Dat or reinstall keys as a first response unless evidence identifies store damage or a key problem. That shortcut can replace or invalidate that evidence before the original decision is understood.
Verification
The incident is resolved only when the original operation succeeds. Confirm the result by repeating the exact operation that produced this result; maintenance success alone is insufficient.
Technical references
- Microsoft Win32 metadata: winerror.h — status definition reference.
- Microsoft: SoftwareLicensingProduct WMI class — owning service/API reference.
- Microsoft: Slmgr. Vbs options — diagnostic/remediation API reference.
- Microsoft: Rebuild the Tokens. Dat file — lifecycle reference.
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