JSI Tip 6150. EFS files on Windows 2000, Windows XP, or Windows .NET Server 2003 that do not have any service packs installed appear to be corrupted or are filled with random characters?

Microsoft Knowledge Base Article 329741 contains the following Description:

If you view Encrypting File System (EFS) files on a computer that is running Windows 2000 or Windows XP, the encrypted files may appear to be corrupted or filled with random characters. This behavior occurs if these files were encrypted on a...