You are the network administrator for ExamSheet.net. Your network has 210 Windows 2000 Professional computers and eleven Windows 2000 Server computers. Users on the network save their work files in home folders on a network server. The NTFS partition that contains the home folders has Encrypting File System (EFS) enabled. A user named Sandra leaves ExamSheet.net. You decrypt the files for her manager. When the manager attempts to open any of the files, he receives the following error message: "Access is denied." You want the manager to be able to access the files. 
What should do? （）