Dear All, Server: Windows Server 2003 Client OS: Windows XP Folder Redirect: My Documents In My Documents, I have a .pst file, when I log off my computer, Sync Manager will run and appear an error: Offline files (\\server\share): Unable to make file Filename available offline on \\server\share. Files of this type cannot be made available offline. The .pst file is cause of error message. I know that the .pst files are excluded by default and I don't want to remove this extension out of excluded list. How can I set these error messages disappear out of my Users? Thanks in advance, Dinh Duy