4D 21 R4 is Here

4D 21 R4 is now officially available, bringing a set of improvements that make client server applications more resilient, strengthen resource control, simplify cleanup logic, and improve administration and connected workflows.

This release improves recovery from temporary network interruptions, brings Apple Writing Tools into 4D forms, adds REST session quotas, introduces the new defer command, and gives administrators a clearer view of active sessions.

Download 4D 21 R4 (monthly Hot Fixes available)

• 4D Client and 4D Server can now better handle temporary network interruptions over QUIC, keeping sessions available during short connectivity losses.
• Apple Writing Tools are now available in 4D forms and 4D Write Pro on compatible macOS environments for proofreading, rewriting, summarizing, and more.
• The new defer command makes cleanup logic safer by automatically running expressions when a method or function exits.
• REST sessions gain quota management through Session.quotas and 4D.QuotaManager, giving developers more control over entity sets stored in memory and resource usage.
• The 4D Server Admin window now brings desktop, Web, REST, and SOAP sessions together in a unified Sessions tab.
• 4D Write Pro adds multi level list style sheets directly in the Interface for more consistent hierarchical documents.
• 4D NetKit introduces mail and calendar change notifications for Microsoft 365 and Google Workspace.
• 4D Qodly Pro improves Webform Editor workflows with better navigation, event coverage, and OnChange control.

This is just a glimpse of what’s new in 4D 21 R4. Get started by downloading 4D 21 R4 and dive into each feature with detailed blog posts.