That's called windows update it's there since the W9x days. Please realize that W10 It's not W7 or XP where you needed like 200 packages and multiple reboots. Here you need basically ONE LCU, ONE SSU, ONE .net update. And possibly a microcode update, depending on your CPU . So getting them using a web browser is not that more complicate than getting them using an automated tool Remember that it's a moving target. Speaking of LTSB 2015 and 2016, the short answer is yes they are two different packages that must be downloaded separately. On recent windows SSU is embedded inside the LCU Yes WU on 2016 makes the update in two steps first downloading the build 2273, then the last one. Not sure if it's on purpose or because a bug. Whatever, there are some bugs preventing the offline update in one run of LTSB 2015 x86 and AMD64 and LTSB 2016 x86, but there are workarounds form various sources.