- Windows 10 to Windows 11: Yes, this upgrade is free if the device meets the Windows 11 minimum system requirements. Microsoft recommends checking eligibility with the PC Health Check app or by going to Start > Settings > Update & Security > Windows Update > Check for updates. If Windows 11 is ready, Windows Update shows Download and install.
- Windows 7 to Windows 11: There is no free upgrade path from Windows 7 to Windows 11. For unsupported versions of Windows, Windows 11 must be purchased. Microsoft also notes that on older PCs, it is often recommended to first check whether the device meets the minimum requirements, because many older Windows 7-era devices will not qualify.
- Possible problems when upgrading:
- The device must meet the minimum hardware specifications for Windows 11.
- Some apps may be uninstalled during the upgrade if they are known to cause problems or are not compatible with Windows 11.
- Older or nonessential software and non-Microsoft antivirus can cause upgrade issues.
- Enough disk space is required.
- If Windows Update does not offer Windows 11 yet, install all current Windows updates first, restart, and check again.
- Best path for each PC:
- Windows 10 PC: Open Settings > Update & Security > Windows Update, install all current updates, then select Check for updates. If eligible, use Download and install for Windows 11.
- Windows 7 PC: First verify whether the hardware can run Windows 11. If it can, Windows 11 must be purchased. Microsoft notes it may be easier to first upgrade to Windows 10 and then upgrade to Windows 11.
- Important caution: Installing Windows 11 on a current PC by purchasing a full version can require reinstalling apps, and files, data, and settings need to be transitioned because the installation can overwrite the existing hard drive contents.
References:
- Can I upgrade to Windows 11? | Microsoft Support
- Upgrade to Windows 11: FAQ | Microsoft Support
- Ways to install Windows 11 | Microsoft Support
- [Windows 11)](https://support.microsoft.com/windows/deployment/install-upgrade/get-help-with-windows-upgrade-and-installation-errors)
- What does it mean if Windows isn't supported? | Microsoft Support