SL_E_HEALTH_CHECK_FAILED_MUI_FILES is HRESULT 0xC004C4AE. It belongs to Genuine Validation. Its narrow boundary is: the validation health check finds altered or inconsistent language-specific MUI resources.
Windows reports “Genuine Validation detected tampered Windows binaries”.
Objects and state transitions
Stage
Role
Validation contract
Template and parameters define the evidence expected for this OS workflow.
Evidence integrity
Blobs, tokens, hashes, signatures or binding data are parsed at the boundary.
Platform comparison
Protected files, firmware and license state contribute to the decision represented by this result.
Verdict
Validation cannot produce a trustworthy success while this result is returned.
Minimum diagnostic record
Evidence
Question answered
Windows build, edition and servicing baseline
Which component produced the validation artifact?
template/blob/token version and producing component
Does its version match the Windows build and template?
earliest validation or Security-SPP event
Is the result malformed evidence, integrity damage, revocation or an explicit verdict?
affected path, expected/actual hash and language-pack identity
Can caller identity and elevation be captured before changing state?
Code-specific distinction
Does the evidence support “capture installed language packs, affected MUI paths and servicing history before component repair” rather than a failure in language-neutral core binaries?
How to reproduce the same condition
Before remediation, confirm that the failure is not instead the neighboring condition: a failure in language-neutral core binaries.
Record 0xC004C4AE, UTC time, caller and the first method or server request that returned it.
the validation health check finds a mismatch in language-neutral protected Windows files
SL_E_INVALID_AD_DATA
Active Directory-based activation evidence is malformed, incomplete or not valid for the current product
SL_E_INVALID_TOKEN_DATA
token-based activation evidence reaches Genuine Validation but its token data is invalid for the requested product or session
A focused reproduction for this exact result
Control
Design
Failing fixture
A language pack is partially updated or copied from another build.
Single variable
Change only one protected file or language resource against a known-good component-store copy.
Positive control
The repaired file hash matches the expected build while licensing inputs stay constant.
Different result
If the experiment instead proves “the validation health check finds a mismatch in language-neutral protected Windows files”, diagnose that condition separately rather than treating it as this HRESULT.
Recovery without broad resets
To correct this using supported mechanisms, capture installed language packs, affected MUI paths and servicing history before component repair.
Changes that make this code harder to diagnose
Avoid hand-editing signed blobs, protected files or firmware tables.
Avoid using unofficial activation patches during integrity investigation.
Avoid rebuilding stores before preserving hashes and event history.