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 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 Modify a stopped instance in the Amazon EC2 User Guide.


This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginModifyInstanceAttribute and EndModifyInstanceAttribute.

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


public virtual Task<ModifyInstanceAttributeResponse> ModifyInstanceAttributeAsync(
         ModifyInstanceAttributeRequest request,
         CancellationToken cancellationToken


Type: Amazon.EC2.Model.ModifyInstanceAttributeRequest

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

Type: System.Threading.CancellationToken

A cancellation token that can be used by other objects or threads to receive notice of cancellation.

Return Value

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

Version Information

.NET Core App:
Supported in: 3.1

.NET Standard:
Supported in: 2.0

.NET Framework:
Supported in: 4.5

See Also