Do not allow encryption on all NTFS volumes

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

HKLM System\CurrentControlSet\Policies

Value name: NtfsDisableEncryption

Enabled: NtfsDisableEncryption = 1

Disabled: NtfsDisableEncryption = 0

Description

Encryption can add to the processing overhead of filesystem operations. Enabling this setting will prevent access to and creation of encrypted files. A reboot is required for this setting to take effect