Настройка доступа к Exchange Online

Install-Module -Name PackageManagement -Repository PSGallery -Force

Install-Module -Name PowerShellGet -Repository PSGallery -Force

Install-Module PowerShellGet -AllowPrerelease -Force -Repository PSGallery -SkipPublisherCheck

exit #restart powershell

Install-Module -Name ExchangeOnlineManagement -AllowPrerelease

Import-Module ExchangeOnlineManagement

Connect-ExchangeOnline -UserPrincipalName navin@contoso.com -ShowProgress $true

https://docs.microsoft.com/en-us/powershell/exchange/connect-to-exchange-online-powershell?view=exchange-ps