If you are facing with Nvidia GeForce Experience error code 0x0003 in Windows 10, you can try the below 4 tips to fix this issue.
1. Force Restart Nvidia Services
Press Windows + R, Type msc and Hit Enter. After that locate Nvidia services, right-click any one of the services and restart the Nvidia service.
2. Fix Network Adapter Problem with Winsock Reset Command
Open Command Prompt and type command "netsh winsock reset"
3. Reinstall Nvidia Components
Press Windows + R, Type cpl to open all programs and features. Find all Nvidia Programs and uninstall it and restart your PC. Restart and download new Nvidia GeForce.
4. Update Nvidia Graphics Driver to the Latest Version
Open Device Manager and choose Display adapters option. After that choose Nvidia driver and update to the latest version.