Main menu (IT)

Supported Operating Systems

Why is a maintained operating system important?

Computer software is constantly under attack, including the operating systems that run our computers. There is a constant back and forth battle between software providers and hackers. Hackers find flaws and software providers release patches to fix the flaws. Hackers don't stop looking for flaws when an operating system is no longer maintained, those flaws just remain un-patched. Because of this, unmaintained operating systems pose a significant threat to the security of CSUN resources. Additionally, current virus protection may no longer widely available for these operating systems. Computers running unsupported operating systems must be upgraded or replaced before accessing any CSUN network. Computers discovered running unsupported operating systems will be removed and blocked.

The Information Security Office provides a list of operating systems that are actively receiving security updates and fixes. Where known, the end of life date for the operating system is included.  


  • CentOS 6.x or greater
  • Mac OS X 10.6 or greater
  • Microsoft Windows 7 Enterprise, Professional, and Ultimate
  • Microsoft Windows 10 Pro and Enterprise
  • RedHat Fedora (recent releases)
  • RHEL 6, 7
  • Sun Solaris 10 or greater
  • Ubuntu (latest two releases)


  • Mac OS X 10.0 - 10.5
  • Microsoft Windows 8.1 and 8.1 Update 1
  • Microsoft Windows 8 and RT
  • Microsoft Windows 7 Home Basic, Home Premium, Starter
  • Microsoft Windows Vista
  • RHEL 5


  • Macintosh System Software (any version)
  • Mac OS 8 (all releases)
  • Mac OS 9 (all releases)
  • Microsoft Windows XP Professional
  • Microsoft Windows XP Home
  • Microsoft Windows 2000
  • Microsoft Windows ME (Millennium)
  • Microsoft Windows CE
  • Microsoft Windows NT
  • Microsoft Windows 98
  • Microsoft Windows 95
  • Microsoft Windows 3.1 & 3.1
  • RHEL 4 and below
  • Any version of DOS
  • All other operating systems not in the "supported" or "unsupported" lists
Operating System End Dates
YearOperating SystemEnd Date
2017Windows VistaApril 11, 2017
 Ubuntu 12April 2017
 RHEL 5March 2017
 OS X 10.10 (Yosemite)Estimated
 FreeBSD 10Estimated
 Solaris 10January 31, 2018
 Windows Server 2008July 30, 2018
 Debian 8 (Jessie)Estimated

What should I do if my operating system isn't on the maintained list?

First, you should check with your vendor or support community to see if your operating system is maintained. If they are continuing to release patches you are in good shape. If your operating system is no longer maintained you should upgrade to a newer maintained operating system. Contacrt Information Security if your OS is not on the list.

What about mobile devices?

Mobile devices, such as phones and tablets, need to run maintained operating systems, just like computers. Unfortunately, it is much more difficult to upgrade the software on these devices due to hardware limitations or carrier/manufacturer customizations. Often, the only way to upgrade to a current version of the operating system is to purchase a new device.

If you use Apple products verify they are running the most current non-Beta version in the list of supported iOS versions. Upgrade any device that can support the latest version. You should discontinue using any device that cannot support the latest version.

Both Android and Windows Phone have a list of current versions on their respective Wikipedia pages. Check for updates if you do not have the current version installed. If, a year after a major version release (the number before the decimal is the major version, with minor versions after the decimal point), the current version is not available for your device there is a good chance an update will never be available. You should purchase a new device that supports the current release and discontinue use of the old device. In the event of major security updates for such a system, users may be advised to immediately discontinue use of any device that is not on the most current version.