Re: Set-Mailbox error

Hi BlytheGroupAdmin,

I understand that you received an error message when trying to run the commands in PowerShell.

Please perform the following steps and troubleshoot this issue:

Open the Windows PowerShell, run these commands:

1. $LiveCred = Get-Credential

In the Windows PowerShell Credential Request window, type the credentials of an account in your cloud-based organization. Then, click OK.

2. $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell/ -Credential $LiveCred -Authentication Basic -AllowRedirection

3. Import-PSSession $Session

After that, check to see if the issue persists.

Here is the detailed information:
Install and Configure Windows PowerShell
Connect Windows PowerShell to the Service

Thanks,
Bourne Zhang