MicrosoftMicrosoftHey Ron Ron . What this means is that you need to upgrade to the v3.0.0 release of the Exchange Online Management module. The v2.0.x releases still use RPS (Remote PowerShell) to connect to Exchange. The v3.0.x release utilise REST API to connect to Exchange. All cmdlets and functionality remains practically the same. It’s just the underlying connectivity to Exchange that is different. You don’t need to change your cmdlets and Get-Mailbox and all the usual cmdlets are still available. There are, however, a few code-breaking changes and you should check MS’s docs for details: https://learn.microsoft.com/powershell/exchange/exchange-online-powershell-v2?view=exchange-ps#updates-for-version-300-the-exo-v3-module
