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Are you using Aws? You might have expired Aws credentials 

That’s what one of my coworkers thought.  I was able to use the same AWS credentials with the AWS cli and it worked fine.  Is there any way I can test or see in the debug logs?

`pulumi preview -v=9 --logtostderr 2&gt;out.txt`

<https://www.pulumi.com/docs/troubleshooting/#diagnosing-issues>

I figured it out.  So, you were right---we are using SSO and there was a conflicting credentials in the ~/.aws/credentials file that was being used by Pulumi, but not by the aws cli.  Odd.  Thank you.