Windows Server 2008 R2 Service Pack 1
Windows Server 2008 R2 SP1
W2K8 R2 Service Pack 1
W2K8 R2 SP1
Windows 7 Service Pack 1
Windows 7 SP1
Win7 Service Pack 1
Note: You should check http://support.microsoft.com for the latest version of the different files.
Note 2: These are not available in Windows Update.
Note 3: You can download them without entering your e-mail address and captcha if you are a Microsoft Premier customer and have a http://Premier.Microsoft.com account.
Note 4: Carefully review the list and decide which might be applicable to your unique environment.
Note 5: Test in your test and your quality assurance environment.
The list has been moved to the Technet Wiki below.
Originally published Apr. 2011, updated Feb. 2012, Jan 2013, and Sep. 2013.
List of Network related hotfixes post SP1 for Windows 7 SP1 and Windows Server 2008 R2 SP1
This should help with getting the list updated sooner with the help of the WW community.