Are you getting an unexplained
An error occurred (AccessDenied) when calling the GetObject operation: Access Denied error when trying to copy a file from an S3 bucket on an EC2 instance even though the assigned role has the
s3:GetObject permission? It could be that your bucket/file is encrypted with AWS-KMS.
In this post, I explain what I did to resolve the
Template format error: Parameter count 62 is greater than max allowed 60 error from CloudFormation after updating an existing CF template with new parameters.