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Breaking changes to Database Engine features in SQL Server 2025 Preview

Applies to: SQL Server 2025 (17.x) Preview

This article describes the breaking changes to features in the SQL Server Database Engine introduced with SQL Server 2025 (17.x) Preview. These changes can break applications, scripts, or functionalities that are based on earlier versions of SQL Server.

Linked servers

SQL Server 2025 (17.x) Preview includes changes to encryption that introduce a breaking change to linked servers. These changes can break applications, scripts, or functionalities that are based on earlier versions of SQL Server. You might encounter these issues when you upgrade.

In SQL Server 2025 (17.x) Preview:

For information about how to connect securely to SQL Server 2025 (17.x) Preview instances, see TDS 8.0.

Replication

SQL Server 2025 (17.x) Preview includes changes to encryption that introduce a breaking change to Transactional, Snapshot, Peer to peer and Merge replication.

In SQL Server 2025 (17.x) Preview:

For information about how to connect securely to SQL Server 2025 (17.x) Preview instances, see TDS 8.0.

Log shipping

SQL Server 2025 (17.x) Preview includes changes to encryption that introduce a breaking change to log shipping. You might encounter these issues when you upgrade.

Log shipping monitoring can break if the monitor is a remote SQL Server 2025 (17.x) Preview instance when other SQL Server instances in the log shipping topology use a previous version.

For information about how to connect securely to SQL Server 2025 (17.x) Preview instances, see TDS 8.0.

PolyBase

SQL Server 2025 (17.x) Preview includes changes to encryption that introduce a breaking change to PolyBase. These changes might break applications, scripts, or functionalities that are based on earlier versions of SQL Server.

In SQL Server 2025 (17.x) Preview:

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