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1 step-by-step Windows jobs with official downloads, exact clicks and checks.

1 how-tosUpdated 4 Nov 2026
Check Windows 11 compatibility

At the end you will know whether each PC meets Microsoft's minimum requirements for Windows 11, which requirement blocks the ones that do not, and whether the blocker is a setting you can turn on (TPM or Secure Boot) or hardware that needs replacing.

9 stepsWindows

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Common Windows errors and fixes

All errors →
Compatible TPM cannot be found

The TPM management console cannot see a TPM, so the PC fails the Windows 11 TPM 2.0 check.

WindowsSecure Boot not available (PC in Legacy BIOS / CSM mode)

The PC fails the Windows 11 Secure Boot check because the firmware boots in Legacy or CSM mode.

Windows0xC1900101

The Windows upgrade rolled back because of a driver problem.

Windows0xC1900200 – 0x20008 / 0xC1900202 – 0x20008

Windows setup stopped because the PC may not meet the minimum requirements for Windows 11.

Windows0x80070070 – 0x50011 / 0x50012 / 0x60000

The Windows upgrade failed because the PC does not have enough free disk space.

Windows