Rpchttp.dll – Pre Service Pack 2 Revision History for Windows 7 SP1, Windows Server 2008 R2 SP1 and Windows Small Business Server 2011 (SBS 2011)
20-Mar-2014 – 6.1.7601.22635 – Rpchttp.dll – x86/x64 – http://support2.microsoft.com/kb/2950358 – A memory leak in Network Store Interface Service (NSI) occurs unexpectedly
24-Dec-2013 – 6.1.7601.22550 – Rpchttp.dll – x86/x64 – http://support.microsoft.com/kb/2916915 – Outlook may take two to three minutes to connect to an Office 365 mailbox
24-Dec-2013 – 6.1.7601.18350 – Rpchttp.dll – x86/x64 – http://support.microsoft.com/kb/2916915 – Outlook may take two to three minutes to connect to an Office 365 mailbox
03-Aug-2013 – 6.1.7601.22412 – Rpchttp.dll – x86/x64 – http://support.microsoft.com/kb/2876644 – FIX: Outlook displays “Trying to Connect” or “Disconnected” when it tries to connect to Office 365 Exchange servers on a computer that is running Windows 7 or Windows Server 2008 R2
09-Jul-2013 – 6.1.7601.22380 – Rpchttp.dll – x86/x64 – http://support.microsoft.com/kb/2849470 – MS13-062: Vulnerability in remote procedure call could allow elevation of privilege: August 13, 2013
09-Apr-2013 – 6.1.7601.22295 – Rpchttp.dll – x64 – http://support.microsoft.com/kb/2836445 – Exchange RPC Client Access service crashes in Windows Server 2008 R2 SP1
05-Nov-2011 – 6.1.7601.21855 – Rpchttp.dll – x86/x64 – http://support.microsoft.com/kb/2619234 – A hotfix is available to enable the Association Cookie/GUID that is used by RPC over HTTP to also be used at the RPC layer in Windows 7 and in Windows Server 2008 R2
17-Jan-2011 – 6.1.7601.21643 – Rpchttp.dll – x86/x64 – http://support.microsoft.com/kb/2492702 – Outlook does not connect to Exchange Server by using RPC over HTTP in Windows 7 or in Windows Server 2008 R2