Current Windows security updates prevent the Gira Project Assistant (GPA) from establishing communication with the following devices: Gira logic module, Gira KNX/IP router and Gira G1. Windows versions 7, 8 and 10 are affected. We are currently working to resolve this problem. Please use the Microsoft-recommended "workaround" until the new GPA and device versions are available. Via this workaround all affected functions are reactivated. The "Workaround - GPA communication with Gira devices.zip". file offers a detailed explanation of how to implement the workaround. The workaround applies to Windows 7, 8 and 10.