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Data Explorer

Azure, Danielle Walsh 0 Reputation points
2026-05-15T13:09:22.1766667+00:00

I am not able to review Data Explorer analytics. Is this a known issue with others?

Azure Data Explorer
Azure Data Explorer

An Azure data analytics service for real-time analysis on large volumes of data streaming from sources including applications, websites, and internet of things devices.

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  1. Pilladi Padma Sai Manisha 7,985 Reputation points Microsoft External Staff Moderator
    2026-05-18T08:29:09.02+00:00

    Hi Azure, Danielle Walsh,

    It sounds like you’re unable to pull up the analytics/monitoring view for your Azure Data Explorer cluster. Typically this boils down to one of a few common mis-configurations:

    1. Azure Data Explorer Insights not enabled
      • Go to your cluster in the Azure portal, click “Monitoring” → “Insights” and make sure the feature is turned on.
    2. No diagnostic logs or metrics configured
    3. Viewing the wrong blade or missing permissions
      • Make sure you’re in the Azure Monitor → Insights blade (not the Data Explorer query pane).
      • Verify you have at least “Monitoring Reader” or higher on the workspace/resource group.
    4. Synapse Data Explorer Pool specifics
      • If you’re using an ADX pool in Synapse, ensure you’ve explicitly selected the cluster URI in the monitoring dashboard. That step can prevent the UI from listing any metrics.
      • Related fix: not seeing tables/metrics until cluster URI is specified in the dashboard.

    If none of the above apply or you’re still stuck, could you help me with a bit more info?

    Follow-up questions

    1. Are you on a standalone ADX cluster or an ADX pool inside Azure Synapse?
    2. Which blade are you clicking in the portal (Azure Monitor → Insights or the Data Explorer query blade)?
    3. Do you see any errors or just a blank chart/list of metrics? A screenshot would help.
    4. Have you set up diagnostic settings on the cluster already? If so, where are they sending logs/metrics?
    5. What role/permissions do you have on the cluster and the Log Analytics workspace?

    Hope this gets you unblocked—let me know the answers above and we’ll drill down further!

    References

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  2. AI answer

    2026-05-15T13:09:33.06+00:00

    There are known scenarios where Azure Data Explorer analytics (Insights, dashboards, or Data Explorer-based views) show no data or appear unavailable, but they are typically configuration or health issues rather than a global outage.

    Check the following common causes:

    1. Verify diagnostic logs are enabled
    • If Usage, Tables, Cache, or similar analytics views are empty, diagnostic logs might not be enabled for the cluster.
    • For each Azure Data Explorer cluster that should appear in analytics/Insights, enable diagnostic logs and send them to a Log Analytics workspace.
    • Ensure at least these categories are enabled: Command, Query, TableDetails, and TableUsageStatistics.
    • Data isn’t retroactive: analytics will only start populating after logs are enabled and activity occurs on the cluster.
    1. Allow time for data to appear
    • Even after enabling logs, data can take from hours up to a day to appear, depending on cluster activity volume.
    1. Check subscription and resource selection
    • In workbooks/Insights or Grafana dashboards, ensure the correct subscription, resource group, cluster, and workspace are selected.
    • If a selected subscription or resource group doesn’t contain any Azure Data Explorer clusters, analytics views will be empty.
    1. Confirm cluster health
    • In the Azure portal, open the cluster’s Resource health:
      • Available: cluster is healthy.
      • Degraded: ingestion or performance issues may affect analytics completeness.
      • Unavailable: queries/ingestion (and thus analytics) may fail; if this persists, contact support.
      • Unknown: Resource Health hasn’t received data for >10 minutes or the cluster is stopped; analytics may not update until the state changes.
    1. If using Azure Managed Grafana
    • Open the Azure Managed Grafana endpoint and a pre-provisioned dashboard such as Azure Data Explorer Cluster Resource Insights.
    • Ensure dropdowns at the top (data source, subscription, resource group, namespace, resource, workspace) are correctly populated with a resource group that actually contains an Azure Data Explorer cluster.
    • Verify the Azure Data Explorer data source configuration: Azure cloud, Cluster URL, Directory (tenant) ID, Application (client) ID, and Client secret must be correct, and Microsoft Entra ID authentication must be properly set up.
    • Ensure the Azure Data Explorer instance firewall does not block access from Azure Managed Grafana; the database must be reachable from the public internet.

    If, after these checks, analytics are still unavailable, review Resource Health for ongoing platform issues and then open a support request if the cluster remains degraded or unavailable.

    References:

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