AWS SDK Version 3 for .NET
API Reference

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Attaches the specified managed policy to the specified IAM group.

You use this API to attach a managed policy to a group. To embed an inline policy in a group, use PutGroupPolicy.

For more information about policies, see Managed Policies and Inline Policies in the IAM User Guide.


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

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


public abstract AttachGroupPolicyResponse AttachGroupPolicy(
         AttachGroupPolicyRequest request
Type: Amazon.IdentityManagement.Model.AttachGroupPolicyRequest

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

Return Value
The response from the AttachGroupPolicy service method, as returned by IdentityManagementService.


InvalidInputException The request was rejected because an invalid or out-of-range value was supplied for an input parameter.
LimitExceededException The request was rejected because it attempted to create resources beyond the current AWS account limits. The error message describes the limit exceeded.
NoSuchEntityException The request was rejected because it referenced an entity that does not exist. The error message describes the entity.
PolicyNotAttachableException The request failed because AWS service role policies can only be attached to the service-linked role for that service.
ServiceFailureException The request processing has failed because of an unknown error, exception or failure.


The following command attaches the AWS managed policy named ReadOnlyAccess to the IAM group named Finance.

To attach a managed policy to an IAM group

var response = client.AttachGroupPolicy(new AttachGroupPolicyRequest 
    GroupName = "Finance",
    PolicyArn = "arn:aws:iam::aws:policy/ReadOnlyAccess"


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

Supported Versions: 4.6 and above
Supported Platforms: Android, iOS, Standalone

See Also