Services, processors, security
- Executive Services
- I/O Manager
- cache manager
- file systems
- network drivers
- device drivers
- Object Manager
- Security Reference Monitor
- Process Manager
- Local Procedure Call Facility
- Virtual Memory Manager
- Processors
- Windows 2000 can support as many as 32 processors, but standard HAL only supports 2 processors (Professional).
- Security
- File and resource permissions, security log and audit