Microsoft is facing a challenge as the end of life for Windows 10 approaches in October, with hundreds of millions of users yet to transition to Windows 11. Throughout 2024, there has been a modest migration to Windows 11, but Windows 10 has recently regained some users. The transition to Windows 11 is free for licensed Windows 10 users whose hardware meets the necessary requirements, but if a PC fails the technical assessment, the free upgrade is not available. Initially, there was a belief that the free upgrade would be time-limited, but this guidance has been revised, and the deadline has been removed. Microsoft has not officially confirmed whether the free upgrade will remain available after the October end-of-life date for Windows 10. Currently, Microsoft states that the free upgrade offer does not have a specific end date but reserves the right to end support for it. Users are encouraged to upgrade before the October 14th deadline, as security updates will cease after that date. Estimates indicate that 300 to 400 million users are still eligible for the upgrade but have not yet acted, with many potentially needing new hardware. Upgrading an incompatible PC may lead to loss of support, leaving users with the options to pay for a support extension or buy a new PC.