JIRA Agile Upgrade is not Working due to Duplicate plugin found error
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Symptoms
The following appears in the atlassian-jira.log:
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2014-06-26 08:32:19,703 UpmAsynchronousTaskManager:thread-2 WARN xxxx 729x11235x2 oxo2xx 192.168.0.69 /rest/plugins/1.0/installed-marketplace [upm.core.install.DefaultPluginInstallationService] com.atlassian.upm.spi.PluginInstallException: Plugin installation failed
com.atlassian.upm.spi.PluginInstallException: Plugin installation failed
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Caused by: com.atlassian.plugin.PluginParseException: Duplicate plugin found (installed version is the same or older) and could not be unloaded: 'com.pyxis.greenhopper.jira'
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Caused by: com.atlassian.plugin.osgi.container.OsgiContainerException: Cannot uninstall bundle com.pyxis.greenhopper.jiraCause
Multiple JIRA Agile installations/re-installations performed in the JIRA instance which causes this issue to occur.
Diagnosis
Multiple JIRA Agile .jar files found in installed-plugins folder in JIRA Home directory.
Resolution
Navigate to
JIRA Home Directory/plugins/installed-pluginsdirectoryDelete the older version(s) of JIRA Agile .jar files and keep the latest version you downloaded
Restart JIRA instance
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