Does your Powershell command require another user in your pipeline? Do you require a specific user with a role with valid permissions? There are several reasons to need to authenticate as a different user.

Here is how you can run as a different user:

See information on our Windows Orb:
​https://circleci.com/developer/orbs/orb/circleci/windows

Using the Windows Environment:

https://circleci.com/docs/using-windows/

Using your own hardware? See more information on Windows Machine Runners:

https://circleci.com/docs/runner-installation-windows