Network Programming in .NET

This issue affects Windows users, specifically Visual Studio with the AWS Toolkit installed, and it happens when the AWS Toolkit keeps a copy of old AWS credentials that may no longer be valid.

Here is the scenario.

I set up my AWS credentials using AWS configure, this stores the credentials in a file /user/.aws/credentials – I run Visual Studio, and AWS Toolkit keeps a copy of the credentials. Now, I decide to change the AWS credentials, and using the CLI again, I change the credentials on my machine. The CLI works fine, but Visual Studio is using old credentials, and breaks with an error like;

UnrecognizedClientException – The security token included in the request is invalid

at Amazon.Runtime.Internal.HttpErrorResponseExceptionHandler.HandleException(IExecutionContext executionContext, HttpErrorResponseException exception)
at Amazon.Runtime.Internal.ExceptionHandler`1.Handle(IExecutionContext executionContext, Exception exception)
at Amazon.Runtime.Internal.ErrorHandler.ProcessException(IExecutionContext executionContext, Exception exception)
at Amazon.Runtime.Internal.ErrorHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.EndpointDiscoveryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.EndpointDiscoveryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CredentialsRetriever.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.RetryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.RetryHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.CallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.ErrorCallbackHandler.InvokeAsync[T](IExecutionContext executionContext)
at Amazon.Runtime.Internal.MetricsHandler.InvokeAsync[T](IExecutionContext executionContext)

Well, what how to clear the AWSToolkit cache?

Go to

C:\Users\<your user>\AppData\Local\AWSToolkit

and

erase RegisteredAccounts.json

Then restart Visual Studio, and it will find the correct credentials.