Most of the next values are either minimum or recommended requirements. It may be possible to have MS Windows Messenger running on systems with slower or inferior components, but some features will be deactivated and the quality of communication (voice and video) will decrease.
CPU: 300MHz or greater (minimum 233MHz), recommended Intel Pentium/Celeron or AMD K6/Athlon/Duron
OS: recommended Windows 2000/XP or newer, Professional or Home Edition
Hard-disk: 10 MB for installation
Memory: 128 MB RAM (minimum 64MB)
Videocard: compatible Super VGA (800 X 600) or better resolution
Sound card: 16bits, compatible SoundBlaster