-> * The [.NET for Apache Spark](https://github.com/dotnet/spark) is an open-source project under the .NET Foundation that currently requires the .NET 3.1 library, which has reached the out-of-support status. We would like to inform users of Azure Synapse Spark of the removal of the .NET for Apache Spark library in the Azure Synapse Runtime for Apache Spark version 3.3. Users may refer to the [.NET Support Policy](https://dotnet.microsoft.com/platform/support/policy/dotnet-core) for more details on this matter. As a result, users it will no longer be possible for users to utilize Apache Spark APIs via C# and F#, or execute C# code in notebooks within Synapse or through Apache Spark Job definitions in Synapse. It is important to note that this change affects only Azure Synapse Runtime for Apache Spark 3.3 and above. We will continue to support .NET for Apache Spark in all previous versions of the Azure Synapse Runtime according to [their lifecycle stages](https://learn.microsoft.com/azure/synapse-analytics/spark/apache-spark-version-support). However, we do not have plans to support .NET for Apache Spark in Azure Synapse Runtime for Apache Spark 3.3 and future versions. We recommend that users with existing workloads written in C# or F# migrate to Python or Scala. Users are advised to take note of this information and plan accordingly.
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