As of July 17, 2017, all centrally-supported Windows and Mac computers will be updated to Adobe Acrobat DC and/or Adobe Reader DC. The DC stands for Document Cloud. This upgrade is necessary as Adobe will no longer provide support for Adobe Acrobat XI Pro or Acrobat Reader XI.
Adobe and Lynda.com have many resources to aid in the upgrade to Adobe Reader/Acrobat DC. If you have questions about the upgrade process you can reach out to Technology Help.