The “PlayStation Network Sign in Failed” problem is reported by various PSN PS5 or PS4 users on the forum site. The PlayStation users are quite disheartened by the problem as they are unable to access their account and can’t play any game on their PS4 & PS5 console.
It is seen that the PlayStation network sign in failed PS4 &PS5 issue generally occurs due to the IP address issues like blocked IP addresses, slow internet, and network-related problems.