KB3124043 - FIX: Query stops responding in SQL Server 2014 after you enable trace flag 2430 - Microsoft Support

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SQL Server 2014 Developer - duplicate (do not use) SQL Server 2014 Enterprise - duplicate (do not use) SQL Server 2014 Standard - duplicate (do not use) More...Less

Symptoms

Assume that you enable trace flag 2430 as a startup parameter in an instance of Microsoft SQL Server 2014. When you execute a query, SQL Server stops responding.

Resolution

Cumulative Update information

The issue was first fixed in the following cumulative update for SQL Server 2014:

Cumulative Update 4 for SQL Server 2014 SP1

Recommendation Install the latest cumulative update for SQL Server

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