Your file has been disconnected and data source credentials greyed out

Hi PBION ,

Thank you for reaching out to Microsoft fabric community forum.

The error message "We are unable to access some data source because the artifact is missing connection details" indicates that the Power BI Service dataset has lost its connection to the original data source. This can happen if SharePoint permissions or data connection ownership change, or if the dataset is republished from Power BI Desktop with updated metadata, causing it to be recognized as a new artifact.

Since your SharePoint list access was recently reduced and you no longer have full edit rights, this is likely causing the issue. Power BI requires at least read and schema-level access to validate and refresh the connection; lower permissions can prevent the dataset from accessing connection details, leading to greyed-out credentials and refresh errors.

To resolve this, check your SharePoint permissions and request temporary Edit or Full Control access if necessary. Power BI needs metadata-level access even if only read access is needed for visuals. Once permissions are restored, go to the dataset in Power BI Service, select Settings > Data source credentials, and re-enter your organizational account to rebind the connection. Also, confirm that both SharePoint List and Access Database sources are mapped to the same gateway cluster under Manage Gateways.

Hope this helps. Please reach out for further assistance.

Thank you.