I ran into this error message saying “The Print Subsystem Is Unavailable” today. I have never seen this before, and I had no clue of how to fix it. Wait… Microsoft says:

This behavior occurs because Office 2000 Setup stops the print spooler at certain points during the installation process. When the fax driver for Microsoft Outlook 2000 is installed, the spooler is stopped and may not be restarted. 

So, I used net start spooler in command, then it restarted the spooler. It works! WOW!!!!!!!