According to an AI answer:
"Error code 1:86001S:66003S:4688822970:0B in Battlefield 6 typically indicates issues with account authentication or network connectivity. To resolve it, try logging out and back into the EA app, verifying your game files, and ensuring no VPNs or firewalls are interfering with the connection."
That said, I believe this is the same error I had early in the game. My wi-fi had connection issues, so i updated and rebooted my router. (Then I got this error)
For me it was fixed after I restarted my PC. Before that I verified my files and restarted steam, both didnt help.
Hope this helps
