c# - Amazon.Runtime.AmazonServiceException: Unable to find credentials

Question

we designed the WebService application in vs 2010 using AWS SDK toolkit which connect to AWS SNS Service.

It Perfectly works when we directly run from VS 2010 Development studio, but when we publish webservice to Local IIS or dedicated webserver it fails with following error Messages.

Amazon.Runtime.AmazonServiceException: Unable to find credentials

Exception 1 of 4:
System.ArgumentException: Path cannot be the empty string or all whitespace.
Parameter name: path
   at System.IO.Directory.GetParent(String path)
   at Amazon.Runtime.StoredProfileAWSCredentials.DetermineCredentialsFilePath(String profilesLocation)
   at Amazon.Runtime.StoredProfileAWSCredentials..ctor(String profileName, String profilesLocation)
   at Amazon.Runtime.EnvironmentAWSCredentials..ctor()
   at Amazon.Runtime.FallbackCredentialsFactory.<Reset>b__1()
   at Amazon.Runtime.FallbackCredentialsFactory.GetCredentials(Boolean fallbackToAnonymous)

Exception 2 of 4:
System.ArgumentException: Path cannot be the empty string or all whitespace.
Parameter name: path
   at System.IO.Directory.GetParent(String path)
   at Amazon.Runtime.StoredProfileAWSCredentials.DetermineCredentialsFilePath(String profilesLocation)
   at Amazon.Runtime.StoredProfileAWSCredentials..ctor(String profileName, String profilesLocation)
   at Amazon.Runtime.FallbackCredentialsFactory.<Reset>b__2()
   at Amazon.Runtime.FallbackCredentialsFactory.GetCredentials(Boolean fallbackToAnonymous)

Exception 3 of 4:
System.InvalidOperationException: The environment variables AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY were not set with AWS credentials.
   at Amazon.Runtime.EnvironmentVariablesAWSCredentials..ctor()
   at Amazon.Runtime.FallbackCredentialsFactory.<Reset>b__3()
   at Amazon.Runtime.FallbackCredentialsFactory.GetCredentials(Boolean fallbackToAnonymous)

Exception 4 of 4:
Amazon.Runtime.AmazonServiceException: Unable to reach credentials server
   at Amazon.Runtime.InstanceProfileAWSCredentials.GetContents(Uri uri)
   at Amazon.Runtime.InstanceProfileAWSCredentials.<GetAvailableRoles>d__0.MoveNext()
   at Amazon.Runtime.InstanceProfileAWSCredentials.GetFirstRole()
   at Amazon.Runtime.FallbackCredentialsFactory.<Reset>b__4()
   at Amazon.Runtime.FallbackCredentialsFactory.GetCredentials(Boolean fallbackToAnonymous)
   at Amazon.Runtime.FallbackCredentialsFactory.GetCredentials(Boolean fallbackToAnonymous)
   at Amazon.SimpleNotificationService.AmazonSimpleNotificationServiceClient..ctor()
   at CellicaAwsSnsService..ctor()
   at Service..ctor()

Answer 1

Create a credentials file at any path where you can access this path from web service application e.g. C:awsfilecredentials but remember don't give any extension this file File should contains following data.

[default]
aws_access_key_id=[your_access_key]
aws_secret_access_key=[your_secret_key]

After this you need to set the path in appsetting tag in the Web.config file:

<appSettings>
<add key="AWSProfilesLocation" value="C:awsfilecredentials" />
<add key="AWSRegion" value="us-east-1" />
</appSettings>