CData Arc 26.4: MCP Server, AI Diagnostics, Partner Mailbox

CData Arc’s Q4 2026 release expands AI-assisted integration operations through its Model Context Protocol server, allowing authorized users to run connectors, requeue failed messages, clean up files, access deeper logs, and receive on-demand explanations and recommendations for failed transactions and worker-pool performance, while requiring confirmation for actions and preserving audit records. New connectors include Partner Mailbox for browser-based partner file exchange, Microsoft 365 Email using Microsoft Graph for shared mailboxes and advanced message handling, and Finalize for confirming successful delivery before source-file cleanup. The update also adds batch-group processing, deferred file finalization, external secrets from Azure Key Vault or environment variables, workspace-specific Git repositories, improved automation and database-health visibility, expanded Admin API capabilities, more detailed audit logging, and numerous mapping, security, certificate, file-transfer, and connector enhancements. It removes several classic interfaces, restricts Version Control to administrators, and requires attention to changed v26 driver defaults during upgrades.

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