As Windows 10 market share rises, a new warning reveals the security dangers ahead—here's what Microsoft users need to know.

In a recent blog post, Microsoft declared 2025 to be the “year of the Windows 11 PC refresh.” That’s because when October rolls around, official support for Windows 10 is going to end and most users will likely need to switch over to Windows 11 when that happens.

Just a few days ago, security researchers warned hundreds of millions of Windows users they’re at risk from a “ dangerous security fiasco .” Microsoft has now confirmed the same, proclaiming 2025 “the year of the Windows 11 PC refresh.” And for 400 million users in particular, that means hitting the stores before it’s too late.

While it’s second best compared to Microsoft’s OS security updates, many providers, including AVG, Bitdefender and Norton, continue to effectively protect Windows 7 systems, which had its last Microsoft security update five years ago.

Millions of computers are heading towards a security crisis as Microsoft plans to end support for Windows 10 on October 14, 2025. The move will leave millions of devices vulnerable to cyberattacks. Despite this impending deadline,