Microsoft have already withdrawn it Windows 10 October 2018 Update (version 1809), but the errorthey keep showing up. For example, there have just been reports of disabling the operating system.
Yes after installing Windows 10 October 2018 Update (1809 version) on computers running the operating system, the Windows watermark appears on the desktop. The watermark only appears on non-enabled Windows. 
Of course the event brings too many problems for users of the operating system that no longer have the key productfor their system. Another problem is that they can't find their key with some third party application because their system is not activated.
Ο μόνος τρόπος αντιμετώπισης είναι να επιστρέψετε στην προηγούμενη έκδοση των Windows 10, χρησιμοποιώντας την λειτουργία "roll-back" και στη συνέχεια να βρείτε το κλειδί προϊόντος, για να επανεγκαταστήσετε το Windows 10 October 2018 Update.
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- Windows 10 Note Disk Cleanup also deletes the downloads
- Windows Server 2019 ISO before the announcement
- Windows 10 S Mode at the touch of a button in Settings
