Introduction In complex SIMATIC WinCC installations—particularly Redundancy configurations, Server-Server communication, or WebNavigator deployments—Microsoft Message Queuing (MSMQ) acts as a critical transport layer. WinCC uses MSMQ to ensure that internal data packages (alarms, tags, messages) are not lost during network fluctuations or server switchovers.
Always test the MSMQ setup under simulated failover conditions before commissioning a production WinCC system. For WinCC v5.0 (very legacy), MSMQ 2.0/3.0 was used. Modern WinCC v7.x requires MSMQ 5.0. Do not attempt to download MSMQ from third-party sites—use Windows built-in features only. Need further assistance? Consult Siemens WinCC Installation Manual or open a support request with Siemens Industry Online Support. microsoft message queuing v5.0 for wincc download
