New
#1
Stop/Start getting Insider Previews after RTM
This will, most likely, be the default procedure for opting out of 'Insider Preview Builds' on your copy Windows 10 Upgrade, and, not necessarily opting you out of the Insider Program per se, but this, of course, is not verified.
Settings►Update and security►Windows Update►Advanced options:
Stop Insider builds:
Get Insider builds: