Hello there!
Microsoft is removing the ability to use Basic authentication in Exchange Online for Exchange ActiveSync (EAS), POP, IMAP, Remote PowerShell, Exchange Web Services (EWS), Offline Address Book (OAB), Outlook for Windows, and Mac. They are also disabling SMTP AUTH in all tenants in which it's not being used.
This decision requires customers to move from apps that use basic authentication to apps that use Modern authentication. Modern authentication (OAuth 2.0 token-based authorization) has many benefits and improvements that help mitigate the issues in basic authentication.
For Lansweeper, to use an O365 email account to send or receive emails in Lansweeper, make sure that:
- You've already set up your Microsoft Cloud Services application.
- You're in possession of your Microsoft Cloud Services application's Application (client) ID, Directory (tenant) ID, and Client secret.
This is explained in full detail in this KB article: https://www.lansweeper.com/knowledgebase/microsoft-graph-email-configuration/