Environment: SecureDoc Client for Windows 8.3SR1 / 8.5 Dell Latitude 5400 For details of SecureDoc Client supported environments, see KBA 1811.
Problem: Users are unable to authenticate at preboot after successfully installing SecureDoc Client for Windows with PBLx32 (legacy BIOS) / PBLUx64 (UEFI BIOS) mode, encrypting the hard disk, and restarting. The preboot authentication screen is not displayed during a system startup. Users are unable to enter authentication details. Solution: This issue is resolved by installing SecureDoc 8.3SR1 or later version with latest KnownConfig XML file. The use of KnownConfig XML forces SecureDoc to use 64bit preboot authentication screen (PBLx64 / PBLUx64 mode). IMPORTANT:The latest KnownConfig XML file is attached toKBA 1745. Always install the latest version. Related Information: For how to use SecureDoc CompatTool to check for pre-boot capabilities, see KBA 1796.