The latest Windows 10 update, KB455699, is meant to improve stability for the latest versions of Windows 10 (v1903 and v1909). What’s the latest version of Windows 10 update? But as a side-effect it broke internet connectivity for many people using proxies and VPNs, particularly with apps that use the WinHTTP or WinInet protocols. Microsoft’s big March update for Windows 10 was mainly designed to improve security on the operating system – security on Microsoft Edge, external device security and password verification. Why was there a Windows 10 update in March?