Where do Hybrid mode registration saves credentials at for windows host?

I'm launching hybrid SSM instances (for EC2 instances) and I tried to use the SSM instance role attached to do some addtional stuff like putting stuff to parameter store. According to the doc: https://docs.aws.amazon.com/systems-manager/latest/userguide/ssm-agent-technical-details.html, Linux SSM agent store credentials at /root/.aws/credentials. I could verify they exist. However, I was not able to find any credentials for windows host. The `C:\Program Files\Amazon\SSM\credentials` is empty and `C:\Users\Administrator\.aws\credentials\` also has no stuff (I created this prior to SSM installation to verify if they write stuff to the file).
I could verify the SSM instance role is being used while running `.\ssm-cli.exe get-diagnostics --output table`
```
AWS Credentials │ Success │ Credentials are for │
│ │ │ arn:aws:sts::xxxxxx
```
Do we have a way to obtain that credentials or use that role directly?

Thanks

Start with the linked SSM Agent technical-details documentation, the Windows paths C:\Program Files\Amazon\SSM\credentials and C:\Users\Administrator\.aws\credentials, and the ssm-cli.exe get-diagnostics command. Determine whether Windows hybrid registration exposes credentials or supports direct use of the instance role, then document the confirmed behavior and supported usage.

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