Fail to create new machine catalog on AWS. The error in studio shows that  "The Catalog could not be loaded due to the following errors: There are no master images associated with this catalog".
And the following error can be found in the CDF trace.
"Launch of new volume worker instance failed with exception: PluginUtilities.Exceptions.ManagedMachineGeneralException: Timeout waiting for xxxx to reach a required state. Current state PoweredOn."

Open 80/443 ports for inbound transport on customer's AWS China account.

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Problem Cause

MCS follows the below process to create vm on AWS.
1.Create an S3 Bucket on AWS
2.Uploading our service RPM file to the S3 Bucket
3.Creating a signed URL to retrieve our RPM from the S3 Bucket
4.Creating a volume worker with userdata containing a script to install our service using the signed URL

But for AWS China user, we cannot access the URL as the 80/443 ports for inbound transport is blocked by default.
So step 4 cannot complete, and then MCS will throw the above error at last.