Technical support

Knowledgebase: Encryption
Full Disk Encryption of Windows 8.0
Article ID: KB169 email a link to this article

It is not possible to upgrade a Windows 8 installation that is using Full Disk Encryption through point releases.  (E.g. Windows 8.0 to 8.1)

Attempting to perform a point upgrade on a Full Disk Encrypted system will result in the upgrade failing and rolling back the changes it attempts.

Therefore we strongly recommend you upgrade Windows 8 to the latest point release before commencing Full Disk Encryption.  This is currently Windows 8.1. 

If you are not sure which version of Windows 8 you are using, please click the following link to display the version of the machine you are browsing from.  The page also includes instructions for identifying the operating system manually: Which Windows operating system am I running?

To initiate an upgrade to Windows 8.1, open the Store tile from the Start Screen, in Store, tap or click the 'Windows 8.1 update' link. 

If in the future should you need to update the machine to a new point release you will first need to decrypt the machine, perform the Windows upgrade and then re-apply the encryption.

Keywords: Windows, 8.0, 8.1, 8.2, UEFI, system, requirements, point, releases, full, disk, FDE, upgrade

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