When you run the Protect computers wizard, installation of security software can fail for a number of reasons.

  • Automatic installation is not possible on that operating system. Perform a manual installation. For other operating systems (if your license permits you to protect them), see the startup guide for Linux.
  • Operating system could not be determined. This may be because you did not enter your username in the format domain\username when finding computers.
  • Firewall rules are blocking access needed to deploy the security software.