Approximately 400 million users are at risk as vulnerabilities in Windows resurface, prompting warnings for immediate action to protect PCs and personal data. The public interest advocacy group PIRG is urging Microsoft to extend Windows 10 support to all users, as the current support for educational institutions will end in one year, potentially rendering many computers obsolete. Microsoft has provided extended support options for educational institutions, allowing them to maintain security for an additional three years at a nominal fee, but details for consumer options remain undisclosed. A significant vulnerability, referred to as a "downdate" threat, remains unpatched, and a new Windows Theme vulnerability has been classified as a zero-day threat. PIRG is advocating for automatic extensions of essential security updates for Windows 10 to prevent a surge of electronic waste and enhance security for users.