Microsoft recently released Cumulative Update 1703 for Windows 10, which updated the OS to build 15063.674 as part of its Patch Tuesday update cycle: unfortunately, it has resulted in the Blue Screen of Death for many users. The latest reports say it has something to do with Windows Server Update Services (WSUS). This appears to actually only affect WSUS users, despite multiple reports of others having issues updating outside of the Enterprise environment. Although Microsoft itself hasn't commented yet, some MVPs, forum volunteers and gurus have chimed in and even posted workarounds and fixes for those bricked (BSOD) machines that applied a Delta patch as well as the Cumulative Update (the former of which has been expired and won't download anymore) and therein was the problem. The Delta patch shouldn't have gone out with the KB update, and this has now been rectified.