Connect to Skype for Business Online PowerShell

Open Windows PowerShell as an administrator (use Run as administrator) on any machine which has Internet connection.

Run the command below, and enter your Office 365 admin account credentials.

$credential = Get-Credential

Run the script below to import the Skype for Business PowerShell Module:

Import-Module SkypeOnlineConnector

Run the command below to create a new session

$session = New-CsOnlineSession -Credential $credential -Verbose

Finally, import the new session into the Windows PowerShell console. 

Import-PSSession $session