macOS 26 breaks custom DNS settings including .internal

2026-03-19 | original

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Why This Matters

The release of macOS 26 introduces a significant change by disabling custom DNS settings, including those for .internal domains. This impacts users and organizations relying on custom DNS configurations for internal network management, security, and privacy. Understanding these changes is crucial for IT professionals and consumers to adapt their network setups accordingly.

Key Takeaways

macOS 26 disables custom DNS configurations, including .internal domains.
This change may affect internal network management and security practices.
Users should review and update their DNS settings to ensure continued network functionality.

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