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Yes. Here what I did:
1. Authenticate:
```$ aws sso login --profile foo```
2. Validate credentials:
```$ aws sts get-caller-identity --profile foo```
3. Run pulumi:
```$ AWS_PROFILE=foo pulumi pre```
Pulumi fails with this error:
```unable to discover AWS AccessKeyID and/or SecretAccessKey - see <https://pulumi.io/install/aws.html> for details on configuration```

Are you configuring your AWS provider in any special way in your stack YAML file? Or are you creating one manually in your main Pulumi program? I'm not quite sure what's going on here :confused:

Nope. I simply specify the region:
```$ cat Pulumi.dev.yaml 
config:
  aws:region: eu-west-1```

BTW I also tried to set aws:profile in there. Same results.

What version of Pulumi and `pulumi_aws` are you using?

```$ grep @pulumi/ package.json 
    "@pulumi/aws": "^4.25.0",
    "@pulumi/pulumi": "^3.16.0"```

That matches with what I'm using... I'm not sure what's going on here, then; sorry :slightly_frowning_face:

Thanks for trying :slightly_smiling_face:

Mentioned this in the other thread, but one thing to maybe look at is `AWS_SDK_LOAD_CONFIG` and seeing if you have that env var set to a truthy value as if your profile is defined in `~/.aws/config` I believe you’ll need that set to pick it up

I replied on the other thread - let's focus the discussion on that one. Thanks! :slightly_smiling_face: