Microsoft 365 to block file access via legacy auth protocols by default
Microsoft has announced that it will start updating security defaults for all Microsoft 365 tenants in July to block access to SharePoint, OneDrive, and Office files via legacy authentication protocols. These changes will also address application access permissions that can expose organizations to unnecessary security risks. The rollout is set to begin in mid-July 2025, with an estimated completion date by August 2025. Microsoft will enable them by default for all Microsoft 365 tenants, across