AWS SDK Version 3 for .NET
API Reference

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Removes the specified Availability Zones from the set of Availability Zones for the specified load balancer.

There must be at least one Availability Zone registered with a load balancer at all times. After an Availability Zone is removed, all instances registered with the load balancer that are in the removed Availability Zone go into the OutOfService state. Then, the load balancer attempts to equally balance the traffic among its remaining Availability Zones.

For more information, see Add or Remove Availability Zones in the Classic Load Balancer Guide.


For .NET Core and PCL this operation is only available in asynchronous form. Please refer to DisableAvailabilityZonesForLoadBalancerAsync.

Namespace: Amazon.ElasticLoadBalancing
Assembly: AWSSDK.ElasticLoadBalancing.dll
Version: 3.x.y.z


public abstract DisableAvailabilityZonesForLoadBalancerResponse DisableAvailabilityZonesForLoadBalancer(
         DisableAvailabilityZonesForLoadBalancerRequest request
Type: Amazon.ElasticLoadBalancing.Model.DisableAvailabilityZonesForLoadBalancerRequest

Container for the necessary parameters to execute the DisableAvailabilityZonesForLoadBalancer service method.

Return Value
The response from the DisableAvailabilityZonesForLoadBalancer service method, as returned by ElasticLoadBalancing.


AccessPointNotFoundException The specified load balancer does not exist.
InvalidConfigurationRequestException The requested configuration change is not valid.


This example removes the specified Availability Zone from the set of Availability Zones for the specified load balancer.

To disable an Availability Zone for a load balancer

var response = client.DisableAvailabilityZonesForLoadBalancer(new DisableAvailabilityZonesForLoadBalancerRequest 
    AvailabilityZones = new List {
    LoadBalancerName = "my-load-balancer"

List availabilityZones = response.AvailabilityZones;


Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also