Announcing Microsoft.Data.SqlClient 7.0.1
We are pleased to announce the release of Microsoft.Data.SqlClient 7.0.1, the first servicing update to the 7.0 line. This patch addresses several compatibility fixes reported by the community after the 7.0.0 GA release. Install or update from NuGet: dotnet add package Microsoft.Data.SqlClient --version 7.0.1 Full release notes: 7.0.1 Release Notes What's in this release SqlBulkCopy fixes for SQL Server 2016 and Azure Synapse Two separate issues affected SqlBulkCopy on older or specialized SQL Server engines: SQL Server 2016 compatibility -- SqlBulkCopy operations failed with Invalid column name 'graph_type' because the column metadata query referenced a column introduced in SQL Server 2017. The query now uses dynamic SQL so the graph_type reference is not compiled on versions that lack the column. (#3714) Azure Synapse dedicated SQL pools -- The column-list query used a variable-assignment pattern that Synapse does not support. The driver now detects Synapse (engine edition 6) and uses STRING_AGG instead, while preserving the variable-assignment fallback for SQL Server 2016 compatibility. (#4149) Vector column type metadata SqlDataReader.GetFieldType() and GetProviderSpecificFieldType() previously returned typeof(byte[]) for vector float32 columns instead of typeof(SqlVector<float>). These methods now follow the same type-determination logic as GetValue(), returning the correct vector type. (#4104) Missing System.Data.Common dependency on .NET Framework The inbox System.Data.Common assembly on .NET Framework predates APIs such as IDbColumnSchemaGenerator. Without the NuGet package dependency, consumers hit CS0012 compilation errors when using these types through Microsoft.Data.SqlClient. The package now explicitly depends on System.Data.Common v4.3.0 for .NET Framework targets. (#4063) User Agent TDS extension enabled unconditionally The Switch.Microsoft.Data.SqlClient.EnableUserAgent AppContext switch has been removed. The driver now always sends User Agent information during login. (#4124) Type forwards for extracted Azure authentication types Type forwards have been added from the core Microsoft.Data.SqlClient assembly to public types that moved to the Microsoft.Data.SqlClient.Extensions.Abstractions package in 7.0.0: SqlAuthenticationMethod, SqlAuthenticationParameters, SqlAuthenticationProvider, SqlAuthenticationProviderException, and SqlAuthenticationToken. This ensures binary compatibility for assemblies compiled against earlier versions of Microsoft.Data.SqlClient. (#4067) Community contributions Both of the SqlBulkCopy fixes in this release were driven by community contributor edwardneal: SQL Server 2016 fix -- Edward authored the original PR (#3719) that rewrote the column metadata query to use dynamic SQL, preventing the graph_type column reference from being compiled on servers that lack it. The fix was recreated on an internal branch (#4092) to enable CI pipeline testing against SQL Server 2016 and 2017. Azure Synapse fix -- Edward identified and fixed (#4176) the incompatibility with Azure Synapse dedicated SQL pools, where the variable-assignment concatenation pattern used to build the column list is not supported. His fix detects Synapse via SERVERPROPERTY('EngineEdition') and switches to STRING_AGG, while preserving the variable-assignment fallback for SQL Server 2016. He manually validated the fix against SQL Server 2016, SQL Server 2025, and an Azure Synapse dedicated SQL pool. We are grateful for Edward's continued contributions to SqlClient. Community involvement like this directly improves the experience for all SqlClient users. Getting started If you are new to Microsoft.Data.SqlClient, check out the documentation. For users of System.Data.SqlClient, see the porting cheat sheet. If you encounter any issues, please report them on the GitHub repository.
Cumulative Update #4 for SQL Server 2025 RTM
The 4th cumulative update release for SQL Server 2025 RTM is now available for download at the Microsoft Downloads site. Please note that registration is no longer required to download Cumulative updates. To learn more about the release or servicing model, please visit: CU4 KB Article: https://learn.microsoft.com/troubleshoot/sql/releases/sqlserver-2025/cumulativeupdate4 Starting with SQL Server 2017, we adopted a new modern servicing model. Please refer to our blog for more details on Modern Servicing Model for SQL Server Microsoft® SQL Server® 2025 RTM Latest Cumulative Update: https://www.microsoft.com/download/details.aspx?id=108540 Update Center for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updates
Security Update for SQL Server 2025 RTM CU3
The Security Update for SQL Server 2025 RTM CU3 is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2025 RTM CUs, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2025 RTM CU3 KB Article: KB5083245 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=7c9659b3-52aa-4693-9221-6e720ecafc01 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5083245 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updatesSecurity Update for SQL Server 2025 RTM
The Security Update for SQL Server 2025 RTM GDR is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2025 RTM, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2025 RTM GDR KB Article: KB5084814 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=023f8cbe-945a-463e-aaf9-a9154037fa62 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5084814 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updatesSecurity Update for SQL Server 2022 RTM CU24
The Security Update for SQL Server 2022 RTM CU24 is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2022 RTM CUs, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2022 RTM CU24 KB Article: KB5083252 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=45a0147b-2806-40f7-955e-834cda4aea11 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5083252 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updatesSecurity Update for SQL Server 2022 RTM
The Security Update for SQL Server 2022 RTM GDR is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2022 RTM, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2022 RTM GDR KB Article: KB5084815 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=e9226e0f-13ef-419a-8795-f1c529b10837 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5084815 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updatesSecurity Update for SQL Server 2019 RTM CU32
The Security Update for SQL Server 2019 RTM CU32 is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2019 RTM CUs, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2019 RTM CU32 KB Article: KB5084816 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=7c86a953-f019-4e80-8513-3d61f871d8d9 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5084816 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updatesSecurity Update for SQL Server 2019 RTM
The Security Update for SQL Server 2019 RTM GDR is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2019 RTM, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2019 RTM GDR KB Article: KB5084817 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=3af5d5a4-4ac0-4448-9ea3-2014db4e77d3 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5084817 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updatesSecurity Update for SQL Server 2017 RTM
The Security Update for SQL Server 2017 RTM GDR is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2017 RTM, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2017 RTM GDR KB Article: KB5084819 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=7232c144-b61b-4aa1-8a74-53f78934e089 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5084819 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updatesSecurity Update for SQL Server 2017 RTM CU31
The Security Update for SQL Server 2017 RTM CU31 is now available for download at the Microsoft Download Center and Microsoft Update Catalog sites. This package cumulatively includes all previous security fixes for SQL Server 2017 RTM CUs, plus it includes the new security fixes detailed in the KB Article. Security Bulletins: CVE-2026-32176 - Security Update Guide - Microsoft - Microsoft SQL Server Denial of Service Vulnerability Security Update of SQL Server 2017 RTM CU31 KB Article: KB5084818 Microsoft Download Center: https://www.microsoft.com/download/details.aspx?familyid=a12600f6-9e6d-4937-8598-71e4ee4e5af6 Microsoft Update Catalog: https://www.catalog.update.microsoft.com/Search.aspx?q=5084818 Latest Updates for Microsoft SQL Server: https://learn.microsoft.com/en-us/troubleshoot/sql/releases/download-and-install-latest-updates