DOCUMENT:Q309128 25-FEB-2002 [homegame] TITLE :MechWarrior 4: Err Msg Connecting to Multiplayer Game PRODUCT :Microsoft Home Games PROD/VER:: OPER/SYS: KEYWORDS:kbimu ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft MechWarrior 4: Vengeance ------------------------------------------------------------------------------- SYMPTOMS ======== When you attempt to connect to a multiplayer game of Microsoft MechWarrior 4, you may receive an error message that states "Unable to Connect" or "Server Connection Failed." CAUSE ===== This behavior can occur when you connect to the MechWarrior 4 server through a proxy server or firewall. RESOLUTION ========== Firewall users must open up ports to use ZoneMatch and DirectX 8 DirectPlay port ranges to successfully participate in games. Matchmaking needs the following TCP ports opened: 27999 28805 28806 28807 28808 For PINGs to work properly, UDP port 28800 must be open. NOTE: To have statistics posted to stats.zone.com from behind a firewall, you must have TCP port 9999 open for outgoing connections. MORE INFORMATION ================ In addition to the ports listed earlier in this article, the DirectX8 DirectPlay ports are outlined in the following article: Q240429 DirectX: Ports Required to Play on a Network Additional query words: msgame ====================================================================== Keywords : kbimu Technology : kbGamesSearch Version : : Issue type : kbprb ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.