I've been able to disable lock screen by changing Group Policy-Do not display the lock screen thanks to change log in Winaero Tweaker. Thank you for bringing Winaero Tweaker up, dalchina.
I've also...

Thank you for the response, dalchina. I used O&O ShutUp10 to change almost all privacy settings it recommended. I changed only 3 group policy, they are listed in the first post. So O&O ShutUp10...

I'm trying to disable lockscreen after waking from sleep. And I can't find such option. Take a look at the screenshot.
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I'm on Windows 10 Enterprise, I'm system administrator and the only...