When trying to connect a Win 10 Preview machine to Windows Server 2012 R2 + Essentials, the connector install fails with: C:\Windows\Temp\ClientDeploymentTempFiles\Windows8-RT-KB2790621-x64.msu failed with status 4, also, When trying to connect a Win 10 Preview machine to Windows 10 Server Preview + Essentials, the connector install fails with: C:\Windows\Temp\ClientDeploymentTempFiles\Windows8.2-KB2790621-x64.msu failed with status 4 I have tried both an Upgrade from Win 8.1 with a working Connector (which was removed during upgrade), and also on a Clean install of Win 10 Preview & Win 10 Server Preview I can still connect to shares on the server, but can't backup/restore to/from the server