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I got the following error when I try to play the Call of Duty (multiplayer mode):

Unable to connect to activision matchmaking error 33.

Anybody have any information about this problem?

Thank you.

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Which Call of Duty? Black Ops? – Raven Dreamer Jun 30 '11 at 22:45
@Raven Dreamer No. COD 4 Modern Warfare – garik Jul 1 '11 at 10:59
up vote 0 down vote accepted

This error is generally related to the network being down, or the game servers being down. The only real solution to it is to wait and try again later.

The other issue that people have had with this error is a problem with their own router. You may need to turn off UPnP on your router.

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the first one. thanks – garik Jul 11 '11 at 13:46

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