$UserCredential = Get-Credential

$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection

if Office 365 operated by 21Vianet customer in China, use the following value for the ConnectionUri parameter: https://partner.outlook.cn/PowerShell.

Import-PSSession $Session