HWID needs an active internet connection (without VPN) which might cause additional security problems (since MS gets your real data such as IP etc).You can't uninstall or remove HWID once you activate it - you can only remove the executable but the activation files are still on the partition.Your hardware ID is stored on Microsoft servers, which means they can blacklist or close the loophole (if they want). HWID activation is done only once and windows will be automatically activated after a format/reinstall.38 itself means 2038 which is the year until LTSB gets supported. It is not a newly invented method, the developer just decided it's cool to rename it ( maybe to get more attention) and add some support for Windows versions which didn't exist back in the 'old' KMS days (KMS_VL_ALL is still under development!). KMS38 is only a renamed and modified version of the original KMS solution designed to activate the problematic Windows versions such as LTSB/LTSC.
