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Hi <@U013QM2EK7Y>

How are you cnfiguring your credentials for the provider?

I use AWS SSO to link the accounts with my main account. In Pulumi I just do this:

```provider = pulumi_aws.Provider(account_name,assume_role={"role_arn": assume_role}, region=region)```
And then reference the provider for each resource.

what is `account_name` ? Is it set via pulumi config set aws:accountName ?

No, it's just a variable that I pass through, just an identifier

I have to clarify that `pulumi up` continues to work properfy, only `pulumi refresh` is breaking.

I have a feeling this is related to <https://github.com/pulumi/pulumi-aws/issues/1158>, so I'll comment there and see if people can replicate

I had AWS_DEFAULT_REGION environment variable set. If I remove it, now I get the following error:

```error: failed to load checkpoint: blob (key ".pulumi/stacks/prod.json") (code=Unknown): MissingRegion: could not find region configuration```

I think it's too much of a coincidence that my potential region problems are appearing at the same time as other people's complaints