Which W10 build are you referring too?
Did you perform a clean install?

The original release (b9841) had the best version of Window Snapping.
Apart from the Task Manager, it worked perfectly on...

Try enabling "Show windows contents while dragging" in Control Panel/System/Advanced system settings/System Properties-Advanced tab/Performance-Settings/Performance Options-Visual Effects tab/check...

windows don't even snap in my windows 10. what's the matter

On Windows 10?
If so, can you try disabling Emisoft and enable Windows Firewall again and see if you did not mess up anything? A lot of people here would be interested to know if you didn't break...

I tried on several occasions to install zonealarm firewall and got this compatibility blablabla. is anyone using it? What's the standalone firewall program that you'd recommend?