Do you need help finding the for the 2016 Rollup?
If you are forced to run 2008 R2 because of a specific legacy app:
This is the mandatory foundation for all subsequent updates. If you don't have it, you can still find it on the Microsoft Update Catalog by searching for KB976932. 2. The "Convenience Rollup" (The Unofficial SP2) download windows server 2008 r2 service pack 2
Built on the Windows Vista kernel. It received Service Pack 2 to align with Vista’s update cycle.
Built on the Windows 7 kernel. This version started at "Service Pack 0" and was only updated officially through Service Pack 1 (SP1). Do you need help finding the for the 2016 Rollup
It is common to confuse these two operating systems because of their names, but they are built on entirely different kernels:
Since there is no SP2, the highest "baseline" you can achieve is Service Pack 1 followed by the Convenience Rollup. Here is the proper path to getting your server up to date: 1. Install Service Pack 1 (SP1) Built on the Windows 7 kernel
Microsoft released KB3125574 in 2016. This package contains almost every update released between SP1 and April 2016. Many administrators refer to this as SP2 because it functions exactly like a service pack.