Microsoft warns Windows 11 installer may fail on Windows 10 by Oct. 14, 2025; use direct ISO download.

Microsoft confirms its Windows 11 Media Creation Tool may fail on Windows 10 systems, particularly 22H2, just before the end of free security updates on October 14, 2025. The tool often closes unexpectedly, blocking clean installations. A fix is in development, but users are advised to download the Windows 11 ISO directly from Microsoft’s website as a reliable alternative. The issue affects x64 systems but not Arm64 devices. With support ending, users must upgrade to avoid security risks.