Hi Nancy, Thank you for coming back so quickly. Did you only have to disable credential guard or the whole of Virtualisation-based security? Did you complete this via GPO or locally on each of the problem machines? It would seem that if this has been enabled by GPO and UEFI lock was enabled, it is not possible to turn this off remotely and requires a touch of the machine, so it would be good to know how you got around the issue. Thanks, Richard
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