While KB3116900 doesn’t bring new features or significant changes, it does bring Windows 10 version 1511 to build 10586.29, which happens to align with the build number of Windows 10 Mobile.
According to the Microsoft support page the “Cumulative update for Windows 10 Version 1511: December 8, 2015” resolves the following security issues in the operating system, Microsoft Edge, and Internet Explorer:
KB3119075 MS15-135: Security update for Windows kernel mode drivers to address elevation of privilege: December 8, 2015 KB3116130 MS15-133: Security updates for Windows RMCAST to address elevation of privilege: December 8, 2015 KB3116162 MS15-132: Security updates for Windows to address elevation of privilege: December 8, 2015 KB3104503 MS15-128: Security updates for Microsoft graphics component to address remote code execution: December 8, 2015 KB3116178 MS15-126: Security updates for Microsoft VBScript and JScript to address remote code execution: December 8, 2015 KB3116184 MS15-125: Cumulative security update for Microsoft Edge: December 8, 2015 KB3116180 MS15-124: Cumulative security update for Internet Explorer: December 8, 2015
As always, the December 8, 2015, update for Windows 10 is cumulative, therefore, the package includes all previously released fixes. If you have installed previous updates, only the new fixes that are contained in this package will be downloaded and installed to your computer. KB3116900 is available immediately through Windows Update, the cumulative update will download and install automatically, but you can always go to Settings > Update & security and manually force the download. Furthermore, the update is available for everyone, including for Windows Insiders and non-Insiders. Source Microsoft All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.