Deployment fails to load provisioning script for VM

[sqlsolver]

Looks to be failing on the GitHub URL. That URL works fine manually, but the relative path in the script is not working.

{
  "code": "DeploymentFailed",
  "message": "At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.",
  "details": [
    {
      "code": "Conflict",
      "message": "{\r\n  \"status\": \"Failed\",\r\n  \"error\": {\r\n    \"code\": \"ResourceDeploymentFailure\",\r\n    \"message\": \"The resource operation completed with terminal provisioning state 'Failed'.\",\r\n    \"details\": [\r\n      {\r\n        \"code\": \"VMExtensionProvisioningError\",\r\n        \"message\": \"VM has reported a failure when processing extension 'Microsoft.Powershell.DSC'. Error message: \\\"The DSC Extension failed to execute: Error downloading https://raw.githubusercontent.com/Azure-Samples/active-directory-lab-hybrid-adfs/master/lab-hybrid-adfs/DSC/adDSC.zip after 29 attempts: The remote name could not be resolved: 'raw.githubusercontent.com'.\\r\\nMore information about the failure can be found in the logs located under 'C:\\\\WindowsAzure\\\\Logs\\\\Plugins\\\\Microsoft.Powershell.DSC\\\\2.80.0.0' on the VM.\\\".\"\r\n      }\r\n    ]\r\n  }\r\n}"
    },
    {
      "code": "Conflict",
      "message": "{\r\n  \"status\": \"Failed\",\r\n  \"error\": {\r\n    \"code\": \"ResourceDeploymentFailure\",\r\n    \"message\": \"The resource operation completed with terminal provisioning state 'Failed'.\",\r\n    \"details\": [\r\n      {\r\n        \"code\": \"DeploymentFailed\",\r\n        \"message\": \"At least one resource deployment operation failed. Please list deployment operations for details. Please see https://aka.ms/arm-debug for usage details.\",\r\n        \"details\": [\r\n          {\r\n            \"code\": \"Conflict\",\r\n            \"message\": \"{\\r\\n  \\\"status\\\": \\\"Failed\\\",\\r\\n  \\\"error\\\": {\\r\\n    \\\"code\\\": \\\"ResourceDeploymentFailure\\\",\\r\\n    \\\"message\\\": \\\"The resource operation completed with terminal provisioning state 'Failed'.\\\",\\r\\n    \\\"details\\\": [\\r\\n      {\\r\\n        \\\"code\\\": \\\"VMExtensionProvisioningError\\\",\\r\\n        \\\"message\\\": \\\"VM has reported a failure when processing extension 'joindomain'. Error message: \\\\\\\"Exception(s) occured while joining Domain 'ADtest4'\\\\\\\".\\\"\\r\\n      }\\r\\n    ]\\r\\n  }\\r\\n}\"\r\n          }\r\n        ]\r\n      }\r\n    ]\r\n  }\r\n}"
    }
  ]
}

[sqlsolver]

This error disappears when the East US region is chosen. Central US never deploys the VMs and the unhelpful message above appears. South Central US flags the template as a poor fit immediately (does not pass validation). Microsoft publishes a helpful directory of services by region (the link is filtered by VMs but you can search for any type of service).