Release: AWS SDK for .NET 1.0.6

Release Notes>.NET>Release: AWS SDK for .NET 1.0.6
Added support for deleting Amazon S3 objects from an MFA delete-enabled bucket, along with minor improvements to the Amazon S3 client and installer configuration.


Submitted By: Craig@AWS
Release Date: March 16, 2010 12:00 AM GMT
Created On: March 16, 2010 11:24 PM GMT
Last Updated: March 16, 2010 11:42 PM GMT

What's New?

MFA Delete The AWS SDK for .NET now supports deleting an object from an multi-factor authentication delete-enabled bucket
Improvements to the Amazon S3 client A number of improvements were made to the Amazon S3 client:
  • A new utility function, Amazon.S3.Util.AWSSDKUtils.DoesS3BucketExist, lets a caller know whether an Amazon S3 bucket with the specified name has already been created.
  • Pre-signed URLs can be generated for HEAD and GET on Versioned Objects. Pre-signed PUT is not yet supported for Versioned Objects.
  • GET Object ACL now correctly returns all grants associated with an Access Control List
Improvements to code samples The Amazon S3 code sample has added functionality that saves an Amazon S3 object to the local filesystem.
Additional support for Medium Trust hosting environments If your ASP.NET applications need to run in a Medium Trust hosting environment, please create AWS Clients with a configuration object that explicitly tells the AWS SDK for .NET not to use a System.SecureString to store the AWS Secret Access Key.

Here is how an Amazon EC2 client can be created to not use a SecureString:

AmazonEC2Config ec2Config = new AmazonEC2Config();
ec2Config.UseSecureStringForAwsSecretKey = false;
AmazonEC2Client ec2Client = new AmazonEC2Client(awsAccessKey, awsSecretKey, ec2Config);

No other changes are needed in your code; all client operations work as expected without further modification.

Installer improvements Users can now decide whether they want the AWSSDK.dll installed into the Global Assembly Cache as part of the Installation Details page.

Supported API Versions

This release of the AWS SDK for .NET supports the following API versions:

Service API Version
Amazon EC2


Amazon S3 2006-03-01
Amazon SimpleDB 2009-04-15
Amazon RDS 2009-10-16
Amazon CloudFront 2009-12-15
Amazon SQS 2009-02-01
Amazon Elastic MapReduce 2009-03-31
Amazon CloudWatch 2009-05-15
Elastic LoadBalancing 2009-05-15
Auto Scaling 2009-05-15

Known Issues

Installation Requires Administrator Privileges The default install location is %PROGRAMFILES%, which on most computers is "c:\program files". In order to install files to the default location, the MSI must be run by an Administrator. If you don't have Administrator privileges on the machine, please change the install location to something like "c:\Documents and Settings\<you>\AWS SDK for .NET", and the install will complete successfully. If you are running on Vista, your personal folder is similar to "c:\users\<you>\".

See also the related known issue on installing the SDK in a custom folder.

Uninstalling the SDK produces "Unknown Publisher" message On Windows Vista, uninstalling the MSI results in an "Unknown Publisher" dialog even though the installer is signed by Amazon Web Services. This is a known Windows Installer bug on Windows Vista, and is documented here:

Download the AWS SDK for .NET from

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