Disable any antivirus and firewalls while using NTLite, since these can wreak havoc while building an image or downloading/installing updates, resulting in bugged and broken images. This happens due to corruption caused by these security features as they block or delete files that NTLite is manipulating. This situation will often occur silently, meaning the user is unaware, and it does not become clear there is a problem until an error appears while installing the image, or after trying to integrate an update and it fails.