FYI, when you are an admin of your own machine but you want to open powershell as another admin user do this:
1. Navigate to the powershell.exe
2. Hold shift and right-click the exe
3. Run as different user
4. Enter creds for other user
5. In the PS window, enter `start-process Powershell -verb runas`
You'll get a UAC prompt and then the new window will be an elevated powershell with your other user. Confirm with `whoami`
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