Microsoft has released Convenience Rollup update for Windows 7 Service Pack 1 and Server 2008 R2 Service Pack 1. This Convenience Rollup update contains all updates and hotfixes which have been released after the release of Service Pack 1 for Windows 7 and Server 2008 R2.
1.Windows 7 Service Pack 1 installed on your system.
If you dont have Service Pack 1 on your system, install it via windows update or download via below links.
Download and install April 2015 Servicing Stack Update KB3020369.
Download Convenience Rollup update
You can download and install the convenience rollup update by opening below link in Internet Explorer 6.0 or later