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NS_E_WMG_LICENSE_TAMPERED
NS_E_WMG_LICENSE_TAMPERED: what the result means
NS_E_WMG_LICENSE_TAMPERED (0xC00D1064) means Windows Media playback found that stored usage-rights data fails its integrity check.
What to capture
Record the content identifier, license or rights-store operation that produced the result, whether other protected items using the same store fail, and the first DRM error in the sequence.
Focused verification
Compare with a known-good protected item under the same user context. Reacquire rights only after preserving the failing state; if newly acquired rights work, the old stored rights were the relevant input.
Technical references
- Windows Media DRM overview
- Acquiring licenses
- Licenses and the local license store
- Windows Media Format SDK error codes
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