Amazon Elastic Compute Cloud
API Reference (API Version 2016-11-15)


Retrieves the encrypted administrator password for an instance running Windows.

The Windows password is generated at boot if the EC2Config service plugin, Ec2SetPassword, is enabled. This usually only happens the first time an AMI is launched, and then Ec2SetPassword is automatically disabled. The password is not generated for rebundled AMIs unless Ec2SetPassword is enabled before bundling.

The password is encrypted using the key pair that you specified when you launched the instance. You must provide the corresponding key pair file.

Password generation and encryption takes a few moments. We recommend that you wait up to 15 minutes after launching an instance before trying to retrieve the generated password.

Request Parameters

The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see Common Query Parameters.


Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is DryRunOperation. Otherwise, it is UnauthorizedOperation.

Type: Boolean

Required: No


The ID of the Windows instance.

Type: String

Required: Yes

Response Elements

The following elements are returned by the service.


The ID of the Windows instance.

Type: String


The password of the instance.

Type: String


The ID of the request.

Type: String


The time the data was last updated.

Type: Timestamp


For information about the errors that are common to all actions, see Common Errors.



This example returns the encrypted version of the administrator password for the specified instance.

Sample Request

Copy &InstanceId=i-1234567890abcdef0 &AUTHPARAMS

Sample Response

<GetPasswordDataResponse xmlns=""> <requestId>59dbff89-35bd-4eac-99ed-be587EXAMPLE</requestId> <instanceId>i-1234567890abcdef0</instanceId> <timestamp>2009-10-24 15:00:00</timestamp> <passwordData>TGludXggdmVyc2lvbiAyLjYuMTYteGVuVSAoYnVpbGRlckBwYXRjaGJhdC5hbWF6b25zYSkgKGdj</passwordData> </GetPasswordDataResponse>

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: