I moved that folder to another partition. My server is Windows 2008 R2, and is DC. Here’s the steps: 1. Logon as administrator. Copy C:windowswinsxs to z:windows. Sep 17, 2008  · A commonly asked question among people looking at a Windows Vista or Windows Server 2008 installation is “why is the WinSxS folder so big?!” To answer. Microsoft’s silence on the matter has made clear: There is not going to be…