Here's how to Fix error code 0x80048830 while syncing from Gmail/ Yahoo! mail to Windows Mail.
Method 1: Turn off Windows Firewall@ Control Panel\System and Security\Windows Firewall\Customize Settings > re-run Mail Method 2: Turn off your installed Anti-Virus client (e.g., inbuilt firewall, real-time protection, etc.) temporarily, such as ESET, Norton and alike