KB2775511. Enterprise hotfix rollup for Windows 7 SP1 and Server 2008 R2 SP1. Helps networking performance on domain-joined computers. Improves the Windows Client Remote File System components: WebDAV, DFSN client, Folder Redirection, Offline Files and Folders,, SMB client, RDB, MUP. Improves the SMB Service and TCP protocol components. Improves the processing of Group Policies and Group Policy preferences. Improves the Windows Management Instrumentation (WMI) components.