-- Starting with [!INCLUDE [sssql25-md](../../includes/sssql25-md.md)], `MSOLEDBSQL` uses Microsoft OLE DB Driver version 19, which adds support for [TDS 8.0](../security/networking/tds-8.md). However, this driver introduces a breaking change. You must now specify the `encrypt` parameter. Use `encrypt` to define whether or not encryption is mandatory. You must provide a valid CA-signed certificate to encrypt your connection to another SQL Server instance, or assign `encrypt=optional` in the *@provstr* argument. For details, review [Server configuration: polybase network encryption](../../database-engine/configure-windows/polybase-network-encryption-server-configuration-option.md).
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