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ERROR_CLIP_LICENSE_SIGNED_BY_UNKNOWN_SOURCE
ERROR_CLIP_LICENSE_SIGNED_BY_UNKNOWN_SOURCE is HRESULT 0xC0EA0007 from Microsoft Store Client Licensing Platform (CLiP). It means that the CLiP license is signed, but its signer is not an accepted licensing source. The practical shorthand Client Licensing signed by unknown source is useful because it points to signer identity, chain status and license acquisition path as the first evidence to preserve.
How to distinguish nearby failures
Nearby condition: Unknown source means a signature exists; invalid_signature means cryptographic validation failed. Hold the recorded identifiers and values constant while changing only the prerequisite described.
Why this HRESULT is specific
A Store app may have cached license information, a device license and one or more licenses for durable add-ons. The Client Licensing Platform validates the chain, signature, time and binding before protected content or functionality is enabled.
The decisive question is whether the primary record supports the reported condition that the CLiP license is signed, but its signer is not an accepted licensing source. Keep evidence tied to the failing operation.
Evidence that can change the diagnosis
| Record | Why it matters |
|---|---|
| Primary record | Signer identity, chain status and license acquisition path; this is the shortest evidence path to the decision. |
| Object correlation | Keep the product, account, package, device, key, or API identity associated with the recorded identifiers and values beside the first timestamped result. |
| Neighboring-state control | Use a controlled comparison that tests whether unknown source means a signature exists; invalid_signature means cryptographic validation failed; this separates the named condition from a nearby status. |
| Before/after result | Retain the outcome before and after the corrective action “obtain the license from the Microsoft Store or another source explicitly trusted by the platform”; keep the same identifiers until StoreContext returns a valid current license. |
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 CLiP license is signed, but its signer is not an accepted licensing source, together with the code, UTC time, and the same identity fields.
- Change one prerequisite: Obtain the license from the Microsoft Store or another source explicitly trusted by the platform; 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 StoreContext returns a valid current license; if another HRESULT appears, diagnose it as a new boundary.
Evidence-preserving cautions
While investigating this result, do not copy license files between devices, disable Client Licensing services, or use third-party license repair tools. That shortcut can replace or invalidate that evidence before the original decision is understood.
Verification
The incident is resolved only when StoreContext returns a valid current license. 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: StoreContext class — owning service/API reference.
- Microsoft: Get license info for apps and add-ons — diagnostic/remediation API reference.
- Microsoft: StoreContext.GetAppLicenseAsync — lifecycle reference.
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