I have been using Nox player for a while to emulate android on my desktop. I play a few different games on it when I don’t want to play on my phone. Nox is highly configurable and you can do a lot with it. One of the first things I noticed though was if I did not have VT enabled – the emulator was very sluggish! Once enabled it was a night and day difference in performance. After playing around with the emulator I soon noticed that it installs random apps Automatically! I assume it is a scheme to where the developers of the emulator get money from installs. After dealing with it for a while and deleting the random games and apps from the home screen, I finally just decided to search on google about it. I found several videos that wanted root access to my computer and for me to change stuff in my C:\Windows\System32\drivers\etc folder. I didn’t really feel comfortable giving that access much less root access to my computer. I then found another YouTube video that had just the fix I needed!
I also decided to follow the advice and block the IP addresses for the domains that all of adware and spyware from Nox were going to and from. I liked this idea more than changing the hosts file in C:\Windows\System32\drivers\etc
- Press start and type:
CMD.exe - Right click on CMD.exe and select “Run as Administrator”
- Copy and paste:
netsh advfirewall firewall add rule name="Nox Block In" dir=in action=block remoteip=220.181.0.0-220.181.255.255,183.128.0.0-183.143.255.255,182.92.0.0-182.92.255.255,101.200.0.0-101.201.255.255,211.151.0.0-211.151.255.255,198.11.128.0-198.11.191.255,124.160.0.0-124.160.255.255,140.205.0.0-140.205.255.255,110.173.192.0-110.173.223.255,121.52.224.0-121.52.255.255,178.162.216.0-178.162.219.255 - Press Enter.
- Copy and Paste:
netsh advfirewall firewall add rule name="Nox Block Out" dir=out action=block remoteip=220.181.0.0-220.181.255.255,183.128.0.0-183.143.255.255,182.92.0.0-182.92.255.255,101.200.0.0-101.201.255.255,211.151.0.0-211.151.255.255,198.11.128.0-198.11.191.255,124.160.0.0-124.160.255.255,140.205.0.0-140.205.255.255,110.173.192.0-110.173.223.255,121.52.224.0-121.52.255.255,178.162.216.0-178.162.219.255 - Press Enter
- Type Exit to close CMD.exe
This will create a firewall rule in windows that will block all inbound and outbound connections to those IP addresses related to Nox.
References:
Tech Insight 
Thats not root access to your computer, its root access to the android installation. (so you can change anything about it.
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I realize this is over a year old, but if anyone’s out there, can you tell me how I would reverse this if I mess it up? I want to know before making any changes. Thanks!
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@Karina Sinclaire
Go to Windows Firewall and just delete entries from Nox Block!
The entries he shows are simply command line strings that add to the Windows Firewall the Nox Block rules to block the ip’s listed hope that helped.
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