- Mastering Windows Network Services (1996)
- Microsoft Visual C++ 5: The Complete Book (1997)
- Windows 2000 in a Nutshell (1999)
- Windows NT 4: The Complete Reference (4th edition, 1999)
- Windows NT/2000 Registry Guide (2nd edition, 2000)
- Active Directory: The Complete Reference (2001)
- Active Directory: The Complete Reference, Second Edition (2002)
- Windows XP Professional: The Complete Reference (2002)
- Windows 2003: The Complete Reference (2nd edition, 2003)
- Windows 2003 Domain Controller Design and Configuration (2004)
- Windows 2003 Security Infrastructure: The Complete Reference (2005)
- Windows 2003 Deployment: The Complete Reference (2006)
- Windows Vista Administration: The Complete Reference (2007)
- Windows Server 2008: The Complete Reference (2nd edition, 2009)
- Windows 7: The Complete Reference (2nd edition, 2010)
- Windows Server 2012: The Complete Reference (2012)
- Windows 8.1: The Complete Reference (2013)
- Windows 8.1 Inside Out (2014)
- Windows 10: The Complete Reference (2nd edition, 2016)
- Windows Server 2016: The Complete Reference (2nd edition, 2018)
Articles and Columns:
Kumpikevicius has also written numerous articles and columns for tech magazines, including:
- Byte
- ComputerWorld
- eWeek
- InfoWorld
- Network World
- PC World
- Windows & .NET Magazine
- Windows IT Pro
- Windows Magazine