AWS SDK Version 3 for .NET
API Reference

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Deletes the specified alias. You cannot perform this operation on an alias in a different AWS account.

Because an alias is not a property of a CMK, you can delete and change the aliases of a CMK without affecting the CMK. Also, aliases do not appear in the response from the DescribeKey operation. To get the aliases of all CMKs, use the ListAliases operation.

Each CMK can have multiple aliases. To change the alias of a CMK, use DeleteAlias to delete the current alias and CreateAlias to create a new alias. To associate an existing alias with a different customer master key (CMK), call UpdateAlias.


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

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


public abstract DeleteAliasResponse DeleteAlias(
         String aliasName
Type: System.String

The alias to be deleted. The name must start with the word "alias" followed by a forward slash (alias/). Aliases that begin with "alias/aws" are reserved.

Return Value
The response from the DeleteAlias service method, as returned by KeyManagementService.


DependencyTimeoutException The system timed out while trying to fulfill the request. The request can be retried.
KMSInternalException The request was rejected because an internal exception occurred. The request can be retried.
KMSInvalidStateException The request was rejected because the state of the specified resource is not valid for this request. For more information about how key state affects the use of a CMK, see How Key State Affects Use of a Customer Master Key in the AWS Key Management Service Developer Guide.
NotFoundException The request was rejected because the specified entity or resource could not be found.

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