End of support for JIRA 6.4: FAQs about upgrading
After March 17th 2017, JIRA 6.4 will no longer be supported by Atlassian. To stay on supported versions of JIRA, you’ll need to upgrade to JIRA Software, JIRA Service Desk, or JIRA Core. (End of support means that Atlassian support will no longer be able to help with questions related to 6.4, even if you have current maintenance.)