You must approve Parsec in Privacy & Security > Local Network to allow it to talk to other devices. 3. Enable UPnP or Port Forwarding
Reboot both the host and client computers, along with your router.
Several underlying network issues typically trigger this error: 6023 parsec error exclusive
If Universal Plug and Play is off, your router may not automatically open the necessary ports.
While the error message itself can feel cryptic, it almost always boils down to something—a firewall, a router setting, or an ISP restriction—blocking the network "handshake" required for the two machines to talk directly to each other. Common Causes of Error 6023 You must approve Parsec in Privacy & Security
Encountering in Parsec can be a frustrating barrier when you're trying to remote into your gaming rig or collaborate with teammates. This specific error signifies that Parsec was unable to negotiate a successful peer-to-peer (P2P) network connection between the client and the host computer .
If your ISP uses CG-NAT, standard port forwarding might not work. In these cases, using a P2P-friendly VPN like or Tailscale can create a virtual "local" network between your devices, effectively bypassing the ISP's blocks. This specific error signifies that Parsec was unable
Forward ports 8000–8002 UDP to the IP address of your host computer. You can find detailed steps on the Parsec Port Forwarding Guide . 4. Bypass Restrictive ISPs with a VPN