how to enable the security tab in Windows XP

To enable the security tab in Windows XP the system must first be using the NTFS file system and not FAT32.

For Windows XP Professional open Windows Explorer then click on Tools and then Folder Options .
Scroll down the list and uncheck the option Use Simple File Sharing ,click Apply then OK. For Windows XP home Simple File Sharing is enforced by default and it cannot be deactivated ,therefore you can only access the security tab from Safe Mode(it is automatically enabled in Safe Mode).