Windows 10 ‘Redstone 4’ test build adds some Windows Defender security tweaks By March 14, 2018wordpress Microsoft is continuing to polish its coming Windows 10 release with Fast Ring Insider Build 17120 as it heads toward the finish line. Read More » Related posts: Windows 10 ‘Redstone 4’ test build adds some Windows Defender security tweaks Windows 10 ‘Redstone 4’ test build adds some Windows Defender security tweaks Hands-on with the first Windows 10X developer preview build – Windows Central Microsoft releases Windows 10 build 19041.208 to the Slow ring with fixes