Introduction
In the Microsoft .NET Framework 4.5.2, Microsoft SQL Server .NET Data Provider (SqlClient) can send 0 to 2147483647 for activity ID sequence number in PreLogin or Trace Activity Header packet of Tabular Data Stream protocol (TDS) to a server.
More Information
SqlClient in previous .NET Framework only can send 0 to 255 for sequence numbers.
References
Other known issues that you may experience after you install Microsoft .NET Framework 4.5.2