Microsoft accidentally breaks Windows 10 to Windows 11 upgrade using MCT ahead of EOL

Microsoft Accidentally Breaks Windows 10 to Windows 11 Upgrade

Microsoft has inadvertently broken the Windows 11 Media Creation Tool (MCT), a key upgrade path for Windows 10 users, ahead of Windows 10's end-of-life (EOL) on October 14, 2025.

Tests have shown that the latest version of the Media Creation Tool fails to work on Windows 10 when attempting to upgrade to Windows 11. Although workarounds exist, a timeline for a fix has not been provided.

With Windows 10 reaching its end-of-life, users will no longer receive free security updates or bug fixes, making them more vulnerable to security risks. This makes upgrading to Windows 11, if the PC supports it, a pressing concern.

After this date, if you are still using Windows 10, you will not get any free security updates or bug fixes.

A fix timeline is not available, but users can explore existing workarounds to upgrade to Windows 11.

Author's summary: Microsoft broke Windows 10 to Windows 11 upgrade tool ahead of EOL.

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Windows Latest Windows Latest — 2025-10-12