Hi @Li ,
Do you mean that the error message show up when you install the "Microsoft.PowerApps.Administration.PowerShell" moudle within your PowerShell window (runs as Administrator)?
Which version of your PowerShell server within your PC?
I have made a test on my side, and don't have the issue that you mentioned. The screenshot as below:
Please check if you have typed proper PowerApps cmdlet moudle within your PowerShell box.
Note: Please do not add extra space within above cmdlet command.
More details about installing PowerApps cmdlets command, please check the following article:
https://docs.microsoft.com/en-us/power-platform/admin/powerapps-powershell
The version of my PowerShell server within my PC is 5.1.17763.316. You could execute the following cmdlet to check your PowerShell vesion:
$PSVersionTable.PSVersion
If the version of your PowerShell server in your PC is not the latest version, please consider upgrade it to the latest version, then try above cmdlet command again, check if the issue is solved.
In addition, please also consider add the following two cmdlet commands before installing "Microsoft.PowerApps.Administration.PowerShell" moudle:
Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Force
dir . | Unblock-File
If the issue still exists, please consider submit an assisted support ticket through the following link:
https://powerapps.microsoft.com/en-us/support/pro
Best regards,
