The 'Do not install BitLocker To Go Reader on FAT formatted fixed drives' setting should be configured correctly. enabled/disabled (1) GPO: Computer Configuration\Administrative Templates\Windows Components\BitLocker Drive Encryption\Fixed Data Drives\s1-o1\Do not install BitLocker To Go Reader on FAT formatted fixed drives (2) Registry Key: HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\FVE\FDVNoBitLockerToGoReader Worksheet: Bitlocker Policy Settings; Row: 6 Setting Index #1047: This is a setting option. Refer to the following parent setting for additional information: Do not install BitLocker To Go Reader on FAT formatted fixed drives http://technet.microsoft.com/en-us/library/ee706521(WS.10).aspx oval:org.secpod.oval:def:14700 Microsoft Security Compliance Management Toolkit for Windows 7, Windows 7 Security Baseline Settings.xlsm 2009-10-01 Microsoft Security Compliance Management Toolkit for Windows 7, Windows 7 Security Baseline.xml 2009-10-01 Microsoft TechNet and other Microsoft online documentation and resources Microsoft HTML SCAP Repo OVAL Definition 2013-08-13