Windows 10 PC build 15042 and Mobile build 15043 now in the Fast ring – here’s what’s new February 25, 2017 by admin Tweet Microsoft today released Windows 10 for PCs Insider Preview build 15042 and Windows 10 Mobile build 15043 to the Fast ring, which are the first new Fast ring builds in over two weeks. Read more… Neowin Related Posts:Windows 11 Insider Preview Build 22621.575 and Build…Windows 11 Insider Dev Channel build 23619 adds a…ISOs for Windows Server Insider Preview build 25217…Windows Server VNext Insider Preview build 25120 is…Windows Server VNext Insider Preview build 25110 is…