Unable to delete an Azure Virtual WAN, after NVA has been deleted in the Hub

It sounds like you're encountering a common issue with resource dependencies and deletion in Azure Virtual WAN. Here are some steps and tips that might help you resolve this problem:

Network virtual appliance issues in Azure

Virtual WAN FAQ

Step-by-Step Troubleshooting:

Check Resource Locks:

• Ensure there are no resource locks on the Azure Virtual WAN or associated resources. Resource locks can prevent deletion.

Review Dependencies:

  - Double-check if there are any lingering dependencies or references to the NVA (Network Virtual Appliance). Sometimes, even if the NVA appears deleted, there might be hidden dependencies.
  
  **Use Azure Resource Graph**:
  
     - Use Azure Resource Graph to query resources and identify any lingering references to the NVA.
     
        - Example Query:
        
        ```sql
        kustoCopy code
        Resources

| where type == 'Microsoft.Network/virtualWANs' | project id, name, properties ```

        **Manually Remove Resource References**:
        
           - Try to manually edit and remove any lingering references to the NVA in the Virtual WAN settings via the Azure portal or Azure CLI.
           
           **Force Deletion via Azure CLI**:
           
              - Use Azure CLI to force delete the Azure Virtual WAN and its resources.
              
                 - Example command:
                 
                 ```yaml
                 bashCopy code
                 az network vwan delete --name <YourVirtualWANName> --resource-group <YourResourceGroupName> --
                 ```
                 
                 **Check for Pending Operations**:
                 
                    - Ensure there are no pending operations on the Azure Virtual WAN or Hub. You can check this in the Activity Log in the Azure portal.
                    
                    **Redeploy with Correct Configuration**:
                    
                       - If deletion fails due to a configuration issue, redeploy the NVA with the exact previous configuration, and then try deleting the Virtual WAN and Hub again.
                       

Advanced Steps:

Azure Support Ticket:

• If you haven't already, consider raising a support ticket with Azure Support. Provide them with detailed logs and the steps you've taken. Sometimes, support can perform backend operations to resolve such issues.

Resource Group Deletion:

  - As a last resort, if you don't have any other critical resources in the same resource group, you can try deleting the entire resource group. This will force the deletion of all resources within it.
  
     - Example command:
     
     ```yaml
     bashCopy code
     az group delete --name <YourResourceGroupName> --
     ```
     

Monitoring and Cost Management:

Given that you're running out of credits, it’s crucial to monitor and manage your Azure spending:

• Set Up Budgets and Alerts:
  • Use Azure Cost Management + Billing to set up budgets and alerts to avoid unexpected charges.
  • Optimize Resource Usage:
    • Ensure that you only deploy necessary resources and deallocate any that are not in use.

Additional Tips:

• Azure Documentation and Community Forums:
  • Refer to the Azure documentation for Virtual WAN and related resources for any specific guidance on deletion issues.
    • Explore community forums like Microsoft Q&A and Stack Overflow for similar issues faced by others and potential solutions.

By following these steps, you should be able to identify and resolve the issue preventing the deletion of your Azure Virtual WAN and associated resources. If the problem persists, reaching out to Azure Support with detailed information is the best course of action.It sounds like you're encountering a common issue with resource dependencies and deletion in Azure Virtual WAN. Here are some steps and tips that might help you resolve this problem:

Step-by-Step Troubleshooting:

Check Resource Locks:

• Ensure there are no resource locks on the Azure Virtual WAN or associated resources. Resource locks can prevent deletion.

Review Dependencies:

  - Double-check if there are any lingering dependencies or references to the NVA (Network Virtual Appliance). Sometimes, even if the NVA appears deleted, there might be hidden dependencies.
  
  **Use Azure Resource Graph**:
  
     - Use Azure Resource Graph to query resources and identify any lingering references to the NVA.
     
        - Example Query:
        
        ```sql
        kustoCopy code
        Resources

| where type == 'Microsoft.Network/virtualWANs' | project id, name, properties ```

        **Manually Remove Resource References**:
        
           - Try to manually edit and remove any lingering references to the NVA in the Virtual WAN settings via the Azure portal or Azure CLI.
           
           **Force Deletion via Azure CLI**:
           
              - Use Azure CLI to force delete the Azure Virtual WAN and its resources.
              
                 - Example command:
                 
                 ```yaml
                 bashCopy code
                 az network vwan delete --name <YourVirtualWANName> --resource-group <YourResourceGroupName> --
                 ```
                 
                 **Check for Pending Operations**:
                 
                    - Ensure there are no pending operations on the Azure Virtual WAN or Hub. You can check this in the Activity Log in the Azure portal.
                    
                    **Redeploy with Correct Configuration**:
                    
                       - If deletion fails due to a configuration issue, redeploy the NVA with the exact previous configuration, and then try deleting the Virtual WAN and Hub again.
                       

Advanced Steps:

Azure Support Ticket:

• If you haven't already, consider raising a support ticket with Azure Support. Provide them with detailed logs and the steps you've taken. Sometimes, support can perform backend operations to resolve such issues.

Resource Group Deletion:

  - As a last resort, if you don't have any other critical resources in the same resource group, you can try deleting the entire resource group. This will force the deletion of all resources within it.
  
     - Example command:
     
     ```yaml
     bashCopy code
     az group delete --name <YourResourceGroupName> --
     ```
     

Monitoring and Cost Management:

Given that you're running out of credits, it’s crucial to monitor and manage your Azure spending:

• Set Up Budgets and Alerts:
  • Use Azure Cost Management + Billing to set up budgets and alerts to avoid unexpected charges.
• Optimize Resource Usage:
  • Ensure that you only deploy necessary resources and deallocate any that are not in use.

By following these steps, you should be able to identify and resolve the issue preventing the deletion of your Azure Virtual WAN and associated resources.