
Keep up to date and have a look at the Microsoft website for the release notes. EXO V3 cmdlets are REST API-based which are much faster and more reliable.Single cmdlet Connect-ExchangeOnline supports both MFA and non-MFA accounts.Run the module from Windows PowerShell and Windows PowerShell ISE.

If you have an older version running, update the EXO V3 module. It is stable and ready for use in production environments. The Exchange Online PowerShell V3 module is currently in General Availability (GA). The Exchange Online PowerShell module (abbreviated as the EXO V3 module) enables admins to connect to their Exchange Online environment in Microsoft 365 to retrieve data, create new objects, update existing objects, remove objects as well as configure Exchange Online and its features.

Microsoft has recently released a new version of Exchange Online PowerShell Module which supports MFA and can be run directly from your computer without the need to login to Exchange Online Admin Center and download any files from there. If you have launched Exchange Online PowerShell today then you most likely have noticed there’s a red line stating the possibility to try the new (Preview Version) of Exchange PowerShell V2. Clicking on Configure would install the PowerShell Module of Exchange Online which looks like the below screenshot.
