Outdated version of Microsoft Windows

You are installing the current version of NANO Antivirus/NANO Antivirus Pro on a computer with Windows 7, Windows 8 or Windows 8.1 and you saw the “Outdated operating system” warning during installation.

Update your operating system to the current version: Windows 10 and above.

Back up important data before updating.

Read the Microsoft article “Upgrade to Windows 10: FAQ” or “Upgrade to Windows 11: FAQ” and upgrade your Windows operating system.
You can upgrade without losing your files in many cases.

Installing a special version of NANO Antivirus/NANO Antivirus Pro

If you want to continue using an outdated operating system, you can install a special version of NANO Antivirus/NANO Antivirus Pro. In this version, only regular updates of virus databases will be available. Updating the program will not be available due to Microsoft restrictions.

Free version (online installer)
PRO version (online installer)
PRO version (offline installer)