Released: Microsoft.Data.SqlClient 4.0.1
Published Jan 20 2022 11:41 AM 3,398 Views
Steel Contributor

We have released an update to Microsoft.Data.SqlClient, version 4.0.1. The update addresses several issues that are important to our customers.


Updates in Microsoft.Data.SqlClient 4.0.1 include:



  • Fixed Kerberos authentication failure when using .NET 6. #1411
  • Fixed connection failure when using SqlLocalDB instance pipe name. #1433
  • Fixed a failure when executing concurrent queries requiring enclaves. #1451
  • Updated obsolete API calls targeting .NET 6. #1401


  • Added AppContext switch SuppressInsecureTLSWarning to allow suppression of TLS security warning when using Encrypt=false in the connection string. #1457


To get the new package, add a NuGet reference to Microsoft.Data.SqlClient in your application.


For the list of changes in Microsoft.Data.SqlClient 4.0.1, you can also see the Release Notes.


If you encounter any issues or have any feedback, head over to the SqlClient GitHub repository and submit an issue.


David Engel

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‎Jan 20 2022 11:41 AM
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