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WPN_E_INVALID_APP
WPN_E_INVALID_APP is an HRESULT used by the Windows notification platform. It means that the supplied application identifier is not valid for the calling packaged application or notification API.
What to check for WPN_E_INVALID_APP
- Verify the app identifier against the installed package manifest and current package identity.
- For multi-app packages, confirm that the specified app belongs to the same package as the caller.
- Avoid deriving the identifier from display names, paths, or unvalidated configuration text.
Diagnostic interpretation
This result has the HRESULT value 0x803E0102. AllStat records the condition as “The application identifier provided is invalid.”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the wpn / app operation.
- compare the failing machine with a working one at the same configuration boundary: component version, policy, registration, identity, and target resource.
Retry and recovery
” has changed.
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