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Published Jul. 2, 2025

'Unable to load external repository class' when a Sharepoint OAuth configuration is missing for an existing repository

Written By

Katlyn Lee

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Issue

  • If the Sharepoint configuration (configured in System Settings) is missing or broken for a repository in Documents and Media, the following error gets thrown every time I access Documents and Media, and I am unable to edit or delete the repository. 

    2021-05-21 13:41:13.419 ERROR [ajp-nio-10.135.17.11-8009-exec-4]
    [IncludeTag:128] Current URL /group/guest/homewidget generates 
    exception: com.liferay.portal.kernel.repository.UndeployedExternal
    RepositoryException: Unable to load external repository class 
    com.liferay.sharepoint.rest.repository.internal.document.library.
    repository.external.SharepointExtRepositoryTestRepo because its plugin 
    is not deployed​

Environment

  • Liferay DXP

Resolution

  • Use the following workaround to resolve this error:

    1. Identify the name of the repository in the error logs. 
      Unable to load external repository class 
      com.liferay.sharepoint.rest.repository.internal.document.library.
      repository.external.SharepointExtRepositoryTestRepo because its plugin 
      is not deployed​
    2. Navigate to System Settings > Documents and Media > Sharepoint OAuth2 and create a new valid Sharepoint configuration with the same name. It can have the same values as an existing configuration, just with the name of the repository referenced in the error (in this case, TestRepo).
    3. Go back to Documents and Media and observe that the 3 dots icon returns for the repository.
    4. Click on the 3 dots icon and delete the repository.
    5. Go back and delete the Sharepoint configuration.
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