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This article describes an improvement in how Microsoft SQL Server handles a configuration-only replica that uses an Always On availability group that has CLUSTER_TYPE = NONE or CLUSTER_TYPE = EXTERNAL values. This improvement enables you to use the CREATE AVAILABILITY GROUP and ALTER AVAILABILITY GROUP DDL statements to set the SESSION_TIMEOUT property for the configuration-only replica.

More information

This improvement is included in the following update for SQL Server:

Cumulative Update 10 for SQL Server 2017

About SQL Server builds

Each new build for SQL Server contains all hotfixes and security fixes that were in the previous build. We recommend that you install the latest build for your version of SQL Server:

The latest build for SQL Server 2017


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