ComboFix relied heavily on the Windows Recovery Console to 'rebase' corrupted system binaries. Windows 11 uses a completely different WinRE structure. If ComboFix attempts to repair a file signature that has moved or changed name, it will delete a critical file by mistake.
: The developer has not released compatibility updates for modern Windows versions, and experts at BleepingComputer combofix windows 11
A rootkit hiding in the UEFI firmware? ComboFix can't see it. A Windows 11 Cloud Download wipes the drive and reinstalls the UEFI partition. Game over for malware. ComboFix relied heavily on the Windows Recovery Console