Windows 11 has encountered issues affecting Lenovo ThinkPad laptops, where a recent security update has blocked the installation of a crucial BIOS update. This problem is linked to changes in the Vulnerable Driver Blocklist and modifications to the WinFlash64.exe file. Lenovo ThinkPad owners receive an error message when attempting to update their BIOS through the BIOS Update Utility or Vantage app. Lenovo is rolling out a new BIOS version 1.61 to address the issue and recommends using Windows Update for the BIOS update. Additionally, Microsoft is phasing out Windows 10, with support ending on October 14, 2025, and encouraging users to upgrade to Windows 11. Over 50% of Windows users still operate on Windows 10, despite the rise in Windows 11 users. Microsoft has been notifying Windows 10 users about potential security risks and offering a streamlined upgrade process to Windows 11, which can be done for free, though it may involve some downtime.