I recently brought my desktop up from the living and am doing clean installs on it now. It is Win7 Pro.
I am unable to get the Blizzard Battle.net Launcher to run ("C:\Program Files (x86)\Battle.net\Battle.net Launcher.exe") unless I disable protection. I do not have any blocked alerts or anything. It works without a hitch on my Windows 8.1 Pro laptop.
Any suggestions on where to start debugging?