Now you can unable to connect to starts matchmaking error 33, which are faced in Call of Duty 4: Modern Warfare game. When you see a problem with online in CoD4, try the below step and reconnect with the CoD4 game.
- Exit out of “Play Online” menu, and go back in.
- Exit out of “Multiplayer” menu, and go back in.
- Log out of the Playstation Network, then sign back in.
- Restart CoD4.
- Restart your internet by running an Internet Connection Test under Network Settings, and check for an error message.
- Sign into a different Playstation 3 account (and a new online account), and try playing, then switch back and compare the two.
- Restart your Playstation 3.
- Restart your modem and/or router (if you control said devices, otherwise ask whoever runs your internet for help). Also work with said network manager to try and solve the problem.
- Look around and/or post in the Playstation 3 boards for help.
- Google search the error.
- Try playing the next day (sometimes errors go away by themselves).
