AWS SDK Version 3 for .NET
API Reference

AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

Updates the configuration parameters for the specified Lambda function by using the values provided in the request. You provide only the parameters you want to change. This operation must only be used on an existing Lambda function and cannot be used to update the function's code.

If you are using the versioning feature, note this API will always update the $LATEST version of your Lambda function. For information about the versioning feature, see AWS Lambda Function Versioning and Aliases.

This operation requires permission for the lambda:UpdateFunctionConfiguration action.


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

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


public abstract UpdateFunctionConfigurationResponse UpdateFunctionConfiguration(
         UpdateFunctionConfigurationRequest request
Type: Amazon.Lambda.Model.UpdateFunctionConfigurationRequest

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

Return Value
The response from the UpdateFunctionConfiguration service method, as returned by Lambda.


InvalidParameterValueException One of the parameters in the request is invalid. For example, if you provided an IAM role for AWS Lambda to assume in the CreateFunction or the UpdateFunctionConfiguration API, that AWS Lambda is unable to assume you will get this exception.
PreconditionFailedException The RevisionId provided does not match the latest RevisionId for the Lambda function or alias. Call the GetFunction or the GetAlias API to retrieve the latest RevisionId for your resource.
ResourceConflictException The resource already exists.
ResourceNotFoundException The resource (for example, a Lambda function or access policy statement) specified in the request does not exist.
ServiceException The AWS Lambda service encountered an internal error.


This operation updates a Lambda function's configuration

To update a Lambda function's configuration

var response = client.UpdateFunctionConfiguration(new UpdateFunctionConfigurationRequest 
    Description = "",
    FunctionName = "myFunction",
    Handler = "index.handler",
    MemorySize = 128,
    Role = "arn:aws:iam::123456789012:role/lambda_basic_execution",
    Runtime = "python2.7",
    Timeout = 123,
    VpcConfig = new VpcConfig {  }

string codeSha256 = response.CodeSha256;
long codeSize = response.CodeSize;
string description = response.Description;
string functionArn = response.FunctionArn;
string functionName = response.FunctionName;
string handler = response.Handler;
string lastModified = response.LastModified;
integer memorySize = response.MemorySize;
string role = response.Role;
string runtime = response.Runtime;
integer timeout = response.Timeout;
string version = response.Version;
VpcConfigDetail vpcConfig = response.VpcConfig;


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