AWS EC2 'You are not authorized to perform this operation. Encoded authorization failure message:'

I am attempting to create an EC2 instance and get the following error message. How do I decode it ?

Launch Failed

You are not authorized to perform this operation. Encoded authorization failure message: KDmmJmkLKmQhatEqYt...MN3iUtfAa

Solution

use the following aws cli command from the console or CloudShell:

aws sts decode-authorization-message --encoded-message KDmmJmkLKm...iUtfAa

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