Win10 Preview 14251 Update Rollup

Microsoft has pushed Win10 RS1 Preview 14251 to Insider Fast Channel users. This update mainly fixes some problems in the previous version, and of course includes the further improvement of Windows10 "Unified Core". Crashes
• Fixed a Bug Windows graphics stack, which results in some games Bug switch to full screen, change the resolution or start: Details are as follows:

Win10 preview version of Update Rollup 14251 . Affected games include Wizard 3, Radiation 4, Tomb Raider Series, Assassin's Creed Series, Alloy Equipment V, etc.
• Fixed some intermittent crashes in screen reading applications, including built-in narrators and magnifiers and other third-party aids.
• Fixed an issue where File Explorer crashed frequently when DPI was set to 175%.
In addition, Microsoft recently updated Cortana and Xbox apps for Insider users