These are the error messages PSOBB may show:
- (No901) Could not obtain the server address. Please check your DNS settings.
- (No902) Network initialization failed. Please check your internet connection settings.
- (No903) Could not connect to the server. It may be under maintenance. Please check the official website for the latest news.
- (No904) The game ID or password is incorrect.
- (No905) The game ID or password is incorrect.
- (No906) The server is under maintenance. Please check the official website for details.
- (No907) Disconnected by the server. Please check your game ID and personal settings.
- (No908) Could not connect to the patch server. It may be under maintenance. Please check the official website for the latest news.
- (No909) The game ID or password is incorrect.
- (No910) This game ID has been suspended.
- (No911) This game ID is being used by another user.
- (No912) There is no record of this game ID. Please register your user information on the official website.
- (No913) Your paid time has expired. Please renew your account on the official website.
- (No914) Your data is locked because the program did not close properly. Please try connecting again in 10 minutes.
- (No915) The program has not been updated. The patch may not have run correctly. Please close and restart the program. The latest news is on the official website.
- (No916) The server is full. Please try connecting again later.