Unable to enable Jira Cloud Migration Assistant

[Arun Shanmugam]

Hi Experts,

Any suggestion on why JCMA is failing to get enabled as below

[Trudy P Claspill]

Hello @Arun Shanmugam 

Welcome to the Atlassian community.

Have you reviewed the logs to look for information related to this error?

Have you tried uninstalling it and reinstalling it?

[Arun Shanmugam]

Hi Trudy,

Thank you for your response..

Could you help me to get into the logs as I am unable to find that.

I haven't uninstalled and reinstalled it... Will try that.

[Trudy P Claspill]

This KB contains some useful information about logs.

https://confluence.atlassian.com/jirakb/useful-log-files-in-jira-data-center-1027120387.html

This KB talks about the error you received.

https://support.atlassian.com/jira/kb/this-app-failed-to-enable-refer-to-the-logs-for-more-information-error-occurring-when-attempting-to-enable-existing-apps-or-install-new-apps/

[David Day_ Appcento]

Hi Arun,

Adding to the suggestions above. A few other things worth checking:

1. Jira version compatibility - Make sure your Jira DC version is supported by the latest JCMA. Older versions sometimes have plugin enablement issues after upgrade.
2. Plugin cache - After removing any duplicate JARs, try clearing the plugin cache: stop Jira, delete the plugins-osgi-cache and plugins-generated-cache folders under <jira-home>/plugins/, then restart.
3. Browser cache - Sometimes the UI shows stale errors. Try enabling JCMA in an incognito window after clearing server-side caches.

If the logs show a specific error code (like JCMA-119 or JCMA-134), that can point to the exact blocker. Feel free to share the relevant log snippet and I can help narrow it down.

[Arkadiusz Wroblewski]

Hello @Arun Shanmugam 

Atlassian has a DC KB for this exact symptom, and one common cause is that Jira still has multiple jira-migration-plugin JARs or other old conflicting plugin JARs in the bundled/installed plugin folders, which stops JCMA from enabling cleanly. 

https://support.atlassian.com/jira/kb/jira-cloud-migration-assistant-is-disabled-after-updating-it-to-the-latest-version/ 

Check atlassian-jira.log first, also check for duplicate old jira-migration-plugin files before just reinstalling again.

[Arun Shanmugam]

Hi Arkadiusz,

Thank you.

Will check that..