I can't/won't disable my antivirus application for WindowBlinds.
For the 3-5 minutes it takes to install the program?
Any program that has real-time protection of your registry like Windows Defender will block the proper installation since it won't let the program write registry keys. Additionally, since Impulse installs software over the internet it needs to have access thru your firewall.
It is your option to go without Windowblinds but I don't think you'll be in all that much danger during the installation. 