Microsoft releases Windows Server Insider Preview build 17666 May 15, 2018 by admin Tweet Microsoft today released another Windows Server build from the Redstone 5 development branch, build 17666. The company also released a new SDK Insider Preview with the same build number. Read more… Neowin Related Posts:Windows Server VNext Insider Preview build 25110 is…Windows Server VNext Insider Preview build 25120 is…Windows Server Preview Build 26052 includes just one…ISOs for Windows Server Insider Preview build 25217…Windows Server Preview Build 25066 is now available