this is not the way to deal with windows update.
Instead you should use GP by opening gpedit.msc and disabling windows update policy
I have done this many times but every reboot Windows reenables Windows update. I cannot get Windows Update to be permanently disabled.
Windows update is there BUT it will pull the updates ONLY if you do it manually.
go to gpedit, change "Configure Automatics Update" to state "disabled"
and just in case run "gpupdate /force" freom win console
(I have dozens of win10 machines that never make any updates on their own, all using this )