-If you are using Azure Data Lake Storage Gen2, and receive the error ```AmbariClusterCreationFailedErrorCode```, ```Internal server error occurred while processing the request. Please retry the request or contact support.```, open the Azure portal, go to your Storage account, and under Access Control (IAM), ensure that the **Storage Blob Data Contributor** or the **Storage Blob Data Owner** role has Assigned access to the **User assigned managed identity** for the subscription. See [Set up permissions for the managed identity on the Data Lake Storage Gen2 account](../hdinsight-hadoop-use-data-lake-storage-gen2.md#set-up-permissions-for-the-managed-identity-on-the-data-lake-storage-gen2-account) for detailed instructions.
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