Why Don't I See a Security Tab on the Properties dialog for My Files and Folders in Windows XP?

You often need to make changes in the security settings of your NTFS disk, for example to allow your Web server to read or write to certain files. You make these changes on the Security tab of the Properties dialog for the file or folder you are working with. However, on a Windows XP computer that is not part of a network, this tab is often not visible. Follow these steps to enable this tab.
Open a Windows Explorer. To do that choose

Start Run..., type explorer and then hit enter.
Choose Folder Options... from the Tools menu. Click the View tab and then scroll all the way down in the Advanced settings list. Make sure that Use simple file sharing (Recommended) is not checked.

Although Microsoft recommends enabling simple sharing, in this case you can't use it as it prevents you from making fine-grained security changes.
Click OK to apply the changes and close the dialog..