Explorer.exe – Pre Service Pack 2 Revision History for Windows Server 2008 R2 SP1, Windows 7 SP1 and Windows Small Business Server 2011 (SBS 2011)

10-Jan-2012 – 6.1.7601.21894 – Explorer.exe – x86/x64 – http://support.microsoft.com/kb/2664055 – Notifications do not appear in the notification area and the View Available Networks feature does not work in Windows 7 or in Windows Server 2008 R2

26-Feb-2011 – 6.1.7601.21669 – Explorer.exe – x86/x64 – http://support.microsoft.com/kb/2515325 – Windows Explorer may crash in Windows 7 or in Windows Server 2008 R2

21-Jan-2011 – 6.1.7601.21646 – Explorer.exe – x86/x64 – http://support.microsoft.com/kb/2498549 – A search window opens unexpectedly after you deploy a Group Policy to disable Windows Explorer search elements in Windows 7 or in Windows Server 2008 R2

18-Dec-2010 – 6.1.7601.21624 – Explorer.exe – x86/x64 – http://support.microsoft.com/kb/2444677 – Error message when you try to start Explorer.exe in Windows 7 or in Windows Server 2008 R2: “Server Execution Failed”