Microsoft is updating Microsoft 365 apps for Windows to block insecure FPRPC legacy authentication protocols by default starting late August 2025, enhancing security. These changes will not impact users of Microsoft Teams on any platform, and new settings will give administrators control over protocol re-enablement. #FPRPC #Microsoft365Apps #LegacyProtocols #SecurityUpdate #TrustCenter
Keypoints
- Microsoft 365 apps for Windows will begin blocking FPRPC and other outdated authentication protocols in version 2508.
- The security enhancement aims to reduce exposure to legacy technologies like FTP, HTTP, and FPRPC.
- Users can manage protocol settings via new Trust Center options and Cloud Policy service, with restrictions for managed protocols.
- These updates follow Microsoft’s efforts to disable ActiveX controls and implement new security features across Office apps and Windows.
- The changes are part of broader initiatives to combat attacks exploiting outdated authentication and improve overall cybersecurity posture.