how to nuke this crap
to nuke all of this crap on W7:
from an admin account, select Programs and Features from control panel, select View Installed Updates from the left, wait until that finishes finding all the updates (could be a few minutes), then use the search box to search for each of:
find one at a time, and if found (not all will necessarily be there), right click and uninstall each one in turn.
check Change Settings on the left in Windows Update selected from Control Panel and make sure Install Updates Automatically IS NOT selected.
when all are uninstalled, reboot, which btw way can take hours sometimes after these are uninstalled (i have no idea what that BS is about; retribution by MS?).
after the reboot, go back to control panel, select Windows Update, then Check for Updates. Find all the ones you just deleted, uncheck them, right click and select Hide Update, or otherwise they will come back.
Also, check to see if C:\$Windows.~BT exists, which is the Windows 10 installer. If so, it can be wasting up to 12GB, so nuke it with cleanmgr started from a cmd window. once cleanmgr finishes its initial (very lengthy) scan, you should select Clean up system files, which will do another very lengthy scan, then check the box for that folder and select OK to nuke it.