Given these significant security and compatibility risks, using Windows 8.1 on any machine connected to the internet is . If you use Windows 8.1 for legacy applications on an air-gapped or isolated network, a pre-activated AIO might offer convenience. However, for everyday computing on a connected PC, the best course of action is to upgrade to Windows 10 or Windows 11, which are still actively supported with critical security updates.
: Includes a massive roll-up of critical security patches, which are necessary to continue receiving any subsequent support from Microsoft. Enhanced Performance