The for Microsoft Office 2010 is a legacy add-in that once allowed users to sync Hotmail, Windows Live, and MSN accounts with their desktop client . However, this tool is now deprecated and no longer works because Microsoft has migrated all Hotmail/Outlook.com accounts to modern Exchange servers that the connector does not support. Why the Connector No Longer Works
If you are still using Office 2010, you can still access your Hotmail or Outlook.com email, though syncing calendars and contacts is no longer natively supported in this version.
Historically, the connector used a specialized protocol to manage mail, calendars, and contacts. Since 2016, Microsoft transitioned these email services to the Microsoft 365 backend. This shift disabled the underlying technology the connector relied on, making it impossible to establish new connections or sync existing ones through the old software. Modern Alternatives for Office 2010 Users