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WPN_E_TOAST_NOTIFICATION_DROPPED
WPN_E_TOAST_NOTIFICATION_DROPPED is an HRESULT used by the Windows notification platform. It means that the platform accepted or received a toast notification but did not present it to the user.
What to check for WPN_E_TOAST_NOTIFICATION_DROPPED
- Check notification settings, focus modes, policy, app state, and platform diagnostics for suppression reasons.
- Do not retry aggressively or assume the toast was visible based only on the send operation.
- Use in-app state or a notification center where the product needs durable visibility.
Diagnostic discriminator: Distinguish acceptance from presentation: verify that the toast was submitted successfully but was subsequently dropped before display. This is not the same as a posting API failure.
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