Basic Authentication Deprecation Can Stop Exchange Online Scripts Working

 

The upcoming removal of support for basic authentication in seven Exchange Online connectivity protocols could mean trouble for some Office 365 tenants if they don’t take care to ensure that modern authentication is used for PowerShell connections. The old-style Remote PowerShell connection must be replaced with the Connect-ExchangeOnline cmdlet from the Exchange Online management module (aka the V2 module). Apart from anything else, this should improve the performance and robustness of scripts, especially after Microsoft finishes the work to remove the WinRM dependency for older cmdlets.

 

https://office365itpros.com/2022/05/18/basic-authentication-powershell/