Do you want to know how to fix PlayStation Network Sign in Failed on PS5 Account? This is very easy to do. If you try signing into PS5 and you can't try going to forget password and resetting your password. Then try signing into the PS5 with a new password! Another thing you can try is changing your Primary and secondary DNS to cloudflare or OPENDNS by google. Then you can try to delete your USER account from PS5 and readd the user profile back to your Playstation 5.