Use this activity to check firewalls. Ensure that the Mobile Notification Service is protected
by firewalls. Since push notifications require changes to firewall rules, verify that the Mobile
Notification Service can call the Notification Hub for each mobile app.
If the firewalls are incorrectly set up and prevent calls from the Mobile Notification Service, adjust the settings to allow communication. This ensures that the service can function properly.
Refer to the technical documentation for further details:
Troubleshooting Synchronization
This activity has no system effect.