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Not Able to create cluster

Aman Darash 0 Reputation points
2026-05-16T08:36:07.5866667+00:00

Please find follow error i am seeing.

Details for the latest failure: Error: The VM size you are specifying is not available. [details] QuotaExceeded: Operation could not be completed as it results in exceeding approved Total Regional Cores quota. Additional details - Deployment Model: Resource Manager, Location: uksouth, Current Limit: 4, Current Usage: 0, Additional Required: 32, (Minimum) New Limit Required: 32. Setup Alerts when Quota reaches threshold. Learn more at https://aka.ms/quotamonitoringalerting . Submit a request for Quota increase at https://aka.ms/ProdportalCRP/#blade/Microsoft_Azure_Capacity/UsageAndQuota.ReactView/Parameters/{"subscriptionId":"431ab4b6-56f5-4273-bf16-1dfaab48fe9a","command":"openQuotaApprovalBlade","quotas":[{"location":"uksouth","providerId":"Microsoft.Compute","resourceName":"cores","quotaRequest":{"properties":{"limit":32,"unit":"Count","name":{"value":"cores"}}}}]} by specifying parameters listed in the ‘Details’ section for deployment to succeed. Please read more about quota limits at https://docs.microsoft.com/en-us/azure/azure-supportability/regional-quota-requests(OnDemand) Type: CLIENT_ERROR Code: AZURE_QUOTA_EXCEEDED_EXCEPTION Cluster-id (internal): 0516-070201-aviwgu0w Additional details: {"instance_id":"failed-600ac9c1-668f-41c6-8","azure_error_code":"QuotaExceeded","azure_error_message":"Operation could not be completed as it results in exceeding approved Total Regional Cores quota. Additional details - Deployment Model: Resource Manager, Location: uksouth, Current Limit: 4, Current Usage: 0, Additional Required: 32, (Minimum) New Limit Required: 32. Setup Alerts when Quota reaches threshold. Learn more at https://aka.ms/quotamonitoringalerting . Submit a request for Quota increase at https://aka.ms/ProdportalCRP/#blade/Microsoft_Azure_Capacity/UsageAndQuota.ReactView/Parameters/{"subscriptionId":"431ab4b6-56f5-4273-bf16-1dfaab48fe9a","command":"openQuotaApprovalBlade","quotas":[{"location":"uksouth","providerId":"Microsoft.Compute","resourceName":"cores","quotaRequest":{"properties":{"limit":32,"unit":"Count","name":{"value":"cores"}}}}]} by specifying parameters listed in the ‘Details’ section for deployment to succeed. Please read more about quota limits at https://docs.microsoft.com/en-us/azure/azure-supportability/regional-quota-requests(OnDemand)"}

Azure Databricks
Azure Databricks

An Apache Spark-based analytics platform optimized for Azure.

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  1. SAI JAGADEESH KUDIPUDI 3,210 Reputation points Microsoft External Staff Moderator
    2026-05-18T23:42:55.67+00:00

    Hi Aman Darash,

    Thank you for sharing the details.

    From the error message, the cluster creation is failing due to a quota limitation in your Azure subscription. Specifically, the deployment requires around 32 vCPUs, while your current regional quota is only 4 vCPUs, which results in a QuotaExceeded error and blocks the cluster creation.

    To resolve this issue, you can try the following:

    1. Submit a request to increase your regional vCPU quota from the Azure portal (Subscriptions → Usage + quotas).
    2. Alternatively, reduce the cluster size or VM configuration so that it fits within your current quota limits.
    3. You can also try deploying the cluster in a different region with higher available quota or capacity.

    Navigate to this link to start the process: https://portal.azure.com/#create/Microsoft.Support 

    Once the quota is increased or the configuration is adjusted, the cluster creation should proceed successfully.

    Please carefully follow my instructions below to create a new Service and subscription limits (quotas) request quota increase to allow access to deploy Zone Redundant SQL Database in the region.

    1. Navigate to this link to start the process:

    https://portal.azure.com/#create/Microsoft.Support

    2. Enter quota in the box and click Go

    User's image

    3. Select Others / Service and subscription limits (quotas) and click Next

    User's image

    4. Click Create a support request button, as shown

    User's image

    5. Select Issue type: Service and subscription limits (quotas), Subscription, Quota type: SQL database, click Next

    new support request description tab

    6. Now you should be on Additional details tab. Click Enter details

    User's image

    7. For quota type select Zone Redundant Access (Availability Zones), select Location, enter expected number of vCores, and then click Save and continue

    quota details flyout

    8. Finish filling out Additional details tab, click Next, review and click Create. You should receive an automated email within a few minutes.

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  2. AI answer

    2026-05-16T08:36:18.7733333+00:00

    The cluster creation fails because the deployment exceeds the current regional vCPU (cores) quota in uksouth.

    From the error:

    • Current regional cores limit: 4
    • Current usage: 0
    • Additional cores required for the cluster: 32
    • Minimum new limit required: 32

    To proceed, either:

    1. Request a regional vCPU quota increase
      • Increase the Total Regional Cores quota for uksouth to at least 32 (or higher if planning more workloads).
      • Use the Azure portal Quotas experience to request additional quota for Microsoft.Compute/cores in uksouth.
      • After the quota increase is approved, re-run the Databricks cluster deployment.
    2. Use a different region with sufficient quota
      • If another region already has enough Total Regional Cores quota, deploy the Databricks workspace/cluster there instead.
    3. Reduce required cores (if possible)
      • Choose smaller VM sizes or fewer worker nodes so that the total core requirement fits within the current regional cores limit.

    This error is a standard Azure quota enforcement: the subscription does not currently have enough regional compute cores available to allocate the requested VM size and node count for the cluster.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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