How can I troubleshoot connection issues with Exchange ActiveSync on my mobile device?

1. Verify Exchange ActiveSync is enabled – Make sure that you have activated the Exchange ActiveSync option on your device, and in your Exchange server.
2. Check if Mobile firewall is blocking messages – If you have a mobile firewall enabled on your device, disable it and try sending emails again.
3. Find and install the latest Exchange ActiveSync app – Try installing the latest Exchange server app from your device’s app store.
4. Check if your credentials are correct – Make sure your username and password are correct.
5. Verify mobile device connectivity – Make sure your device is connected to the internet.
6. Test with different networks – Try connecting to different networks to check if the issue is caused by the one you're connected to.