AWS SDK Version 3 for .NET
API Reference

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Modifies the specified attribute of the specified instance. You can specify only one attribute at a time.

Note: Using this action to change the security groups associated with an elastic network interface (ENI) attached to an instance in a VPC can result in an error if the instance has more than one ENI. To change the security groups associated with an ENI attached to an instance that has multiple ENIs, we recommend that you use the ModifyNetworkInterfaceAttribute action.

To modify some attributes, the instance must be stopped. For more information, see Modifying Attributes of a Stopped Instance in the Amazon Elastic Compute Cloud User Guide.


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

Namespace: Amazon.EC2
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z


public abstract ModifyInstanceAttributeResponse ModifyInstanceAttribute(
         ModifyInstanceAttributeRequest request
Type: Amazon.EC2.Model.ModifyInstanceAttributeRequest

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

Return Value
The response from the ModifyInstanceAttribute service method, as returned by EC2.


This example modifies the instance type of the specified stopped instance.

To modify the instance type

var response = client.ModifyInstanceAttribute(new ModifyInstanceAttributeRequest 
    InstanceId = "i-1234567890abcdef0",
    InstanceType = 


This example enables enhanced networking for the specified stopped instance.

To enable enhanced networking

var response = client.ModifyInstanceAttribute(new ModifyInstanceAttributeRequest 
    EnaSupport = jsondata object,
    InstanceId = "i-1234567890abcdef0"


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