Update version 1.6 of Call of Duty: World at War to 1.7 with this patch, which fixes a number of multiplayer issues to Treyarch’s World War 2 shooter. 

You will need a World at War installation already updated to version 1.6 for this patch to work.

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Patch notes:

• Fixed an MP server crash exploit.
• Fixed a voice chat crash on systems with no default recording device selected.
• Fixed an issue causing erroneous duplicate qport errors.
• Server admins can disable team switching by setting g_allow_teamchange to 0. Players will be restricted to Auto-Assign in team-based gametypes