Sorry for off-topic, but have a legal question regarding Windows Insider. Is it legal to install Insider build without activation and keep it running if it sta

Sorry for off-topic, but have a legal question regarding Windows Insider. Is it legal to install Insider build without activation and keep it running if it stay in fast updates ring? Currently updates postpone temporary license expiration, but I can't find an answer how licensing work actually. I only run Windows in VM and I don't want to mess my 8.1 system with genuine license.