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

30-Apr-2014 – 6.1.7601.22670 – Iphlpsvc.dll – x86/x64 – http://support.microsoft.com/kb/2951611/ – DirectAccess is used for internal network connections in Windows 7 SP1

10-Jan-2013 – 6.1.7601.22214 – Iphlpsvc.dll – x86/x64 – http://support2.microsoft.com/kb/2796313/ – Long reconnection time after a DirectAccess server disconnects a Windows 7-based DirectAccess client

09-Oct-2012 – 6.1.7601.22130 – Iphlpsvc.dll – x86/x64 – http://support.microsoft.com/kb/2758949 – You cannot build an IP-HTTPS protocol-based connection on a computer that is running Windows 7 or Windows Server 2008 R2

03-Oct-2012 – 6.1.7601.22124 – Iphlpsvc.dll – x86/x64 – http://support.microsoft.com/kb/2750841 – An IPv6 readiness update is available for Windows 7 and for Windows Server 2008 R2

03-Oct-2012 – 6.1.7601.17964 – Iphlpsvc.dll – x86/x64 – http://support.microsoft.com/kb/2750841 – An IPv6 readiness update is available for Windows 7 and for Windows Server 2008 R2

05-Nov-2011 – 6.1.7601.21855 – Iphlpsvc.dll – x86/x64 – http://support.microsoft.com/kb/2633127 – DA client cannot reconnect to the UAG DA server when a Windows 7-based or Windows Server 2008 R2-based client computer is connected to the Internet

14-May-2011 – 6.1.7601.21728 – Iphlpsvc.dll – x86/x64 – http://support.microsoft.com/kb/2535133 – IP-HTTPS clients may disconnect from Windows Server 2008 R2-based web servers intermittently after two minutes of idle time

13-May-2011 – 6.1.7601.21727 – Iphlpsvc.dll – x86/x64 – http://support.microsoft.com/kb/2535121 – IP-HTTPS connections disconnect if the network status is changed on a computer that is running Windows 7 or Windows Server 2008 R2