Purpose: Microsoft released an emergency patch for Windows 2012R2 that was included last weekend for the rest of the server platforms. The severity of this necessitates a quick patch implementation.
Impact: Minimal impact. Skype for Business' redundant architecture maintains availability during patching. For Transact Card System, door panels will maintain functionality. Those servers that patch automatically will do so out of use hours.
Affected: Skype for Business environment, Transact Card System