DOWNLOAD_SOURCE Failed AWS CodeBuild

The error message indicates that your build doesn't have internet connectivity. If you are setting up a project with VPC config, please check your VPC settings. You can refer to this documentation .Troubleshooting Your VPC Setup section to verify your VPC settings. You may also click the Validate VPC Settings button in CodeBuild's console to check your VPC settings.

Another most likely scenario is your codebuild does not have appropriate permission for accessing code which is either in codecommit,git or s3, if you use wizard to create this it will automatically grant appropriate permission to it.

Hope this helps!

For a repository in codecommit the NO VPC setting worked fine for me

if you have defined vpc in codebuild environment settings then select private subnets. It is recommended to use private subnets in this document. Check the security groups selected, it should allow to fetch your code from the source like Amazon S3 or bitbucket