I am trying to backup over a LAN. There is no communication problem. But I constantly get this error (usually with a different file mentioned) about 1/3 into the backup. E00040003: Failed to backup file or folder 'C:\Documents and Settings\***\Desktop\***\***\***\Thumbs.db'. Error writing the file. (0x40003) function = "WriteFileNoCache" Tag = 0x7CEB2CDC9FB1216B The specified network name is no longer available (0xFFF0) code = 80070040 Tag = 0xBD28FDBD64EDB8A6 I am using Version 10 Build 4942 on Windows XP Pro SP2. Any ideas? Also, do all programs need to be closed in order to do the backup? For example, If I am backing up my pst file, do I need to close Outlook?