Microsoft's official end of support for Windows 10 is set for October 2025, prompting the company to encourage users to transition to Windows 11 through a "limited-time" free upgrade offer. Windows 11 has stringent system requirements, including TPM 2.0 support, which many older PCs lack. Microsoft 365 apps will stop receiving updates on Windows 10 after support ends, although they will continue to function. Users who do not upgrade can opt for the Extended Security Updates (ESU) program for continued security patches at a cost. Options for users include upgrading to a compatible PC, switching to another operating system like Linux, or remaining on Windows 10 with limited support.