This has been tested successfully on JIRA 7 running on a Windows Server.
This is useful in case you cannot install an add-on from the application itself. In case of a clustered Data Center configuration, the modifications should be replicated across all nodes.
- Download the add-on you need to install as a jar file.
- Access one of the servers running the application with Administrative privileges.
- Copy the add-on to <jira-home>\plugins\installed-plugins.
In case the changes do not reflect immediately on the add-ons page, consider restarting the Jira service.