- Clients that run YaLS must have joined an Active Directory Domain.
- Windows NT 4.0 client:
- Service Pack 6a
- Internet Explorer 5 or higher
- Active Directory Client Extensions
- Windows Script Host 5.6
- Windows 2000 Workstation: Windows Script Host 5.6
- Windows XP Professional: Windows Script Host 5.6 or at least SP1
- Windows XP Professional x64