TLS Cipher Suites in Windows 7
That page states:
Windows 7, Windows 8, and Windows Server 2012 are updated by the Windows Update by the 3042058 update which changes the priority order. See Microsoft Security Advisory 3042058 for more information.
That advisory states:
The update added additional cipher suites to the default list on affected systems and improved cipher suite priority ordering.
It has been available in Windows Update since Oct 2015. Win7 only had one update actually named as a "Service Pack" ... SP1 in 2011. After that there were many patches pushed via Windows Update. The first "Convenience Rollup" of these patches was in July 2016. If you just install that rollup the cipher updates will be included, and it will take care of any pre-reqs. See July 21, 2016 — KB3172605.