Dfsc.sys – Pre Service Pack 2 Revision History for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)
04-Oct-2013 – 6.1.7601.22472 – Dfsc.sys – x86/x64 – http://support.microsoft.com/kb/2894219 – DFS link does not go offline when you access redirected folders from a different site in Windows
18-Oct-2012 – 6.1.7601.22137 – Dfsc.sys – x86/x64 – http://support.microsoft.com/kb/2775511 – An enterprise hotfix rollup is available for Windows 7 SP1 and Windows Server 2008 R2 SP1
22-Nov-2011 – 6.1.7601.21864 – Dfsc.sys – x86/x64 – http://support2.microsoft.com/kb/2647452 – Paged pool leaks when you map a network drive and then disconnect it frequently in Windows 7 or in Windows Server 2008 R2
15-Jun-2011 – 6.1.7601.21747 – Dfsc.sys – x86/x64 – http://support.microsoft.com/kb/2537589 – SMB/CIFS sessions leak in Windows Vista, in Windows Server 2008, in Windows 7 and in Windows Server 2008 R2
19-May-2011 – 6.1.7601.21730 – Dfsc.sys – x86/x64 – http://support.microsoft.com/kb/2549311 – You cannot access a DFS share by using a valid user account in Windows Server 2008 R2, in Windows 7, in Windows Vista or in Windows Server 2008