: Ensure your Windows Firewall isn't blocking DPI. You may need to go to "Allow an app through firewall" and ensure DirectPackageInstaller is ticked for both public and private networks. Troubleshooting Connectivity

In technical terms, this error occurs during the handshake process. When you attempt to link your PS4, the system requests specific "info" packets (Data Packet Inspection) to verify the connection's stability and security. If your router, ISP, or console settings block or misinterpret these packets, the "DPI Get Info Error" triggers, and the link fails. Phase 1: Basic Connection Refreshes

: On your PC, disable "Segmented Download" and "Proxy Downloads" within the DPI settings, as these can interfere with the direct link established with the console.

on your PS4. DPI is designed to detect and use RPI as a fallback. Check Link Validity