Fixed: Windows 10 locks/screensavers even when I don't want it

Today I worked with a customer that had an interesting problem  They have kiosks that auto-login and they don't want those machines to lock or pop a screen saver.

We thought we turned it off with a GPO, but it was still auto-locking after period of time.

The cause was a gem hidden in the settings menu under Accounts and Sign-in options.

"If you’ve been away, when should Windows require you to sign in again?” 

Toggling that switch fixed it.

Monitoring that change in ProcMon points to this registry value:

Path: HKEY_CURRENT_USER\Control Panel\Desktop
Name: DelayLockInterval