2: OS version:
Windows 10 Pro 1703, OS Build 15063.413
3: What you did:
Installed Windows 10 (with recent updates), launched iTunes64Setup.exe installer (iTunes 12.6.1 for Windows 64-bit)
4: What you actually saw:
Installer failed, error message
5: What you expected to happen or see:
Install iTunes properly
Comment: First, I disabled CCAV and closed the program. However, that didn’t help. Eventually I had to remove CCAV completely in order to install iTunes. This is obviously some kind of conflict between the two programs.