Hi Michał Łeptuch,
Thank you for posting in the Q&A Forums.
This error means that your request targets an app that is not in the allowed receiving apps list by WNS. This can happen due to a number of reasons. Here are some possible causes and solutions:
- Application not properly registered
Make sure your application is properly registered and able to receive WNS notifications.
Check the registration status of your application in the Windows Developer Center.
Verify that the application Package Family Name (PFN) is correct. 2.
- Notification channel is expired or invalid
The WNS channel may have expired or become invalid.
Re-request a new channel URI and try sending the notification again.
Verify that your application handled the change in the channel URI and updated the records on the server.
- Privilege Issues
Ensure that your application is authorized to receive WNS notifications.
Verify that your application's WNS notification key and SID (Security Identifier) are properly configured on your server.
Check that your server is using the correct authentication tokens.
- Configuration errors
Check your application's configuration and notification sending logic.
Verify that your application is not misconfigured when receiving notifications.
Verify that all parameters in the notification request are correct.
Best regards
NeuviJ
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