Microsoft plans to block outdated protocols, including FrontPage Remote Procedure Call, as part of its "Secure by Default" initiative to enhance cybersecurity within its Microsoft 365 ecosystem. This decision aims to phase out legacy technologies that pose security risks, reflecting a broader industry trend toward prioritizing robust cybersecurity over maintaining older systems. The impact will be significant in enterprise environments, where legacy systems are often critical, requiring IT teams to identify dependencies on these protocols. While Microsoft provides guidance for migration, the responsibility lies with customers, which may strain relationships with long-time clients.