Manage add-ons - An unexpected error has occurred. Please refer to the logs for more information.

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  1. You cannot access the Universal Plugin Manager from "Administration -> Manage add-ons" link.
  2. You may receive an error and see the following screen: 

    An unexpected error has occurred. Please refer to the logs for more information.



There are a few potential causes:

1) Configuration

a. The most common problem is that your server base URL does not match the actual URL of the site.

b. If you are running Bitbucket Server prior to 5.0:

  • Incorrect or missing proxy settings in your server.xml when accessing Bitbucket Server behind a proxy
  • After Bitbucket Server 5.0 server.xml is not configurable anymore and you need to make a manual migration using these instructions: Migrate server.xml customizations to

c. Incorrect plugin loading order causing UPM to fail to initialize properly when Bitbucket Server is started.

2) UPM bug

UPM-4541 - Getting issue details... STATUS

3) New security baselines on Bitbucket server

4) Incompatible plugin


1) Configuration

In matching order for the above listed causes:

a. Your server base URL needs to match the URL that you are using to access Bitbucket Server. To change this setting, follow the Specifying the base URL for Bitbucket Server document.

b. The proxy information must be properly configured. Please review Proxying and securing Bitbucket Server and make sure you include the appropriate proxy information for the connector. Notice that for Bitbucket Server 5.0+, you will need to Migrate server.xml customizations to

c. To correct the plugin loading order, follow the steps below:

  • Shut Bitbucket Server down
  • Backup <BITBUCKET_HOME>/plugins directory
  • Remove the following directories. They will be rebuilt when Bitbucket Server starts again.
    • <BITBUCKET_HOME>/plugins/.bundled-plugins/
    • <BITBUCKET_HOME>/plugins/.osgi-cache/
  • Restart Bitbucket Server.

    Upon starting up, Bitbucket Server will re-extract the required plugins from <BITBUCKET_INSTALL>/atlassian-bitbucket/WEB-INF/classes/ and rebuild those plugin directories.

2) UPM bug

Upgrade your UPM.

3) New security baselines on Bitbucket server

Please read through:

4) Please check the plugin is compatible with your Bitbucket instance on the

Last modified on May 19, 2017

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