The update is described as KB3135173, it brings the operating system to build 10586.104, and it addresses a number of issues regarding authentication, Microsoft Edge, Windows Store apps, Groove Music playback, and more.

Here’s what’s new in KB3135173 for Windows 10

Fixed issues with authentication, update installation, and operating system installation. Fixed issue with Microsoft Edge browser caching visited URLs while using InPrivate browsing. Fixed issue that didn’t allow simultaneous install of apps from the Windows Store and updates from Windows Update. Fixed issue that delayed the availability of songs added to the Groove Music app in Windows 10 Mobile. Improved security in the Windows kernel. Fixed security issues that could allow remote code execution when malware is run on a target system. Fixed security issues in Microsoft Edge and Internet Explorer 11 that could allow code from a malicious website to be installed and run on a device. Fixed additional issues with the Windows UX, Windows 10 Mobile, Internet Explorer 11, Microsoft Edge, and taskbar. Fixed additional security issues with .NET Framework, Windows Journal, Active Directory Federation Services, NPS Radius Server, kernel-mode drivers, and WebDAV.

As always, the February 9th update for Windows 10 is cumulative, and it includes all the previously installed updates. Therefore, only the new changes will download and install in your computer. KB3135173 is available immediately through Windows Update for computers that aren’t part of the Insider program, and it’ll download and install automatically. However, you can always go to Settings > Update & security> Windows Update and manually force the download. Source Windows 10 Update History, 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.