Microsoft will implement default settings in Microsoft 365 starting mid-July 2025 that block legacy authentication protocols as part of its Secure Future Initiative. Legacy authentication methods, including the Remote PowerShell (RPS) protocol for SharePoint and OneDrive, and the FrontPage Remote Procedure Call (RPC) protocol, will be phased out due to their vulnerability to attacks. Additionally, administrator consent will be required for third-party applications seeking access to organizational files and sites, which may disrupt existing workflows. All changes will be applied by default across all Microsoft 365 tenants.