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WPN_E_NOTIFICATION_SIZE
WPN_E_NOTIFICATION_SIZE is an HRESULT used by the Windows notification platform. It means that the notification payload is larger than the maximum size accepted by the platform.
What to check for WPN_E_NOTIFICATION_SIZE
- Measure the final serialized notification content rather than only the source text or template.
- Remove redundant data and keep the notification focused on the information needed for the alert.
- Place large details behind an app activation or deep link instead of embedding them in the payload.
Diagnostic discriminator: Measure the serialized notification payload passed to the API and compare it with the platform limit. This result is a size violation, not a channel or capability failure.
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