Consider the following scenario. You map a drive to a Windows XP-based computer from a Windows Vista-based computer. When you try to access the mapped drive from the Windows XP-based computer, you receive the following error message:

System error 5 has occurred.
Access is denied.

This problem occurs if the following conditions are true:

• Both computers are members of a workgroup.
• You do not give the Full Control shared permission to the Everyone group.
• You give the Full Control shared permission to the Administrators group.

Note: This access failure occurs regardless of the NTFS file system permissions that are assigned to the mapped drive.