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@renovate renovate bot commented Aug 6, 2025

This PR contains the following updates:

Package Change Age Adoption Passing Confidence
Microsoft.Data.SqlClient (source) 2.1.3 -> 6.1.1 age adoption passing confidence

Release Notes

dotnet/sqlclient (Microsoft.Data.SqlClient)

v6.1.1

This update includes the following changes since the 6.1.0 release:

Fixed
  • Reverted changes related to improving partial packet detection, fixup, and replay functionality. This revert addresses regressions introduced in 6.1.0. (#​3556)
  • Applied reference assembly corrections supporting vector, fixed JSON tests, and ensured related tests are enabled. #​3562
  • Fixed SqlVector<T>.Null API signature in Reference assembly. #​3521
Changed
  • Upgraded Azure.Identity and other dependencies to newer versions. (#​3538) (#​3552)

v6.1.0

This update brings the following changes since the
6.1.0-preview2 release:

Added

No new features were added.

Fixed
  • Fixed missing socket error codes on non-Windows platforms.
    (#​3475)
  • Fixed primary/secondary server SPN handling during SSPI negotiation.
    (#​3478)
  • Fixed AzureKeyVaultProvider package key caching to serialize Azure key fetch
    operations.
    (#​3477)
  • Fixed a rare error related to multi-packet async text reads.
    (#​3474)
  • Fixed some spelling errors in the API docs.
    (#​3500)
  • Fixed a rare multi-packet string corruption bug.
    (#​3513)
Changed
SqlDecimal type workarounds conversions

What Changed:

  • Changed how SqlDecimal type workarounds perform conversions to meet
    compliance policies.
    (#​3467)

Who Benefits:

  • Microsoft products must not use undocumented APIs on other Microsoft products.
    This change removes calls to undocumented APIs and replaces them with
    compliant API use.

Impact:

  • These changes impose an observed 5% decrease in performance on .NET Framework.
SqlVector API improvements

What Changed:

  • Several changes were made to the SqlVector API published in the
    6.1.0-preview2 release
    (#​3472):
    • The SqlVector class was changed to a readonly struct.
    • The null value constructor was changed to a static CreateNull() method.
    • The Size property was removed.

Who Benefits:

  • SqlVector instances gain the efficiencies of struct handling.

Impact:

  • Early-adopter applications may require updates if they rely on the old APIs
    and any class-specific behaviour.

v6.0.2

This update brings the following changes since the
6.1.0-preview1 release:

Added
Added dedicated SQL Server vector datatype support

What Changed:

  • Optimized vector communications between MDS and SQL Server 2025, employing a
    custom binary format over the TDS protocol.
    (#​3433,
    #​3443)
  • Reduced processing load compared to existing JSON-based vector support.
  • Initial support for 32-bit single-precision floating point vectors.

Who Benefits:

  • Applications moving large vector data sets will see beneficial improvements
    to processing times and memory requirements.
  • Vector-specific APIs are ready to support future numeric representations with
    a consistent look-and-feel.

Impact:

  • Reduced transmission and processing times for vector operations versus JSON
    using SQL Server 2025 preview:
    • Reads: 50x improvement
    • Writes: 3.3x improvement
    • Bulk Copy: 19x improvement
    • (Observed with vector column of max 1998 size, and 10,000 records for each
      operation.)
  • Improved memory footprint due to the elimination of JSON
    serialization/deserialization and string representation bloat.
  • For backwards compatibility with earlier SQL Server Vector implementations,
    applications may continue to use JSON strings to send/receive vector data,
    although they will not see any of the performance improvements noted above.
Revived .NET Standard 2.0 target support

What Changed:

Who Benefits:

  • Libraries that depend on MDS may seamlessly target any of the following
    frameworks:
    • .NET Standard 2.0
    • .NET Framework 4.6.2 and above
    • .NET 8.0
    • .NET 9.0
  • Applications should continue to target runtimes.
    • The MDS .NET Standard 2.0 target framework support does not include an
      actual implementation, and cannot be used with a runtime.
    • An application's build/publish process should always pick the appropriate
      MDS .NET/.NET Framework runtime implementation.
    • Custom build/publish actions that incorrectly try to deploy the MDS .NET
      Standard 2.0 reference DLL at runtime are not supported.

Impact:

  • Libraries targeting .NET Standard 2.0 will no longer receive warnings like
    this:
    • warning NU1701: Package 'Microsoft.Data.SqlClient 6.0.2' was restored using '.NETFramework,Version=v4.6.1, .NETFramework,Version=v4.6.2, .NETFramework,Version=v4.7, .NETFramework,Version=v4.7.1, .NETFramework,Version=v4.7.2, .NETFramework,Version=v4.8, .NETFramework,Version=v4.8.1' instead of the project target framework '.NETStandard,Version=v2.0'. This package may not be fully compatible with your project.
Fixed
  • Fixed missing <NeutralLanguage> property.
    (#​3325)
  • Fixed injection of UTF-8 BOM during bulk copy.
    (#​3399)
  • Fixed SqlCachedBuffer async read edge case.
    (#​3329)
  • Fixed SqlSequentialTextReader edge case with single-byte reads.
    (#​3383)
  • Fixed an incorrect error message when parsing connection string PoolBlockingPeriod.
    (#​3411)
  • Added missing ToString() override to SqlJson.
    (#​3427)
Changed

v6.0.1

This update brings the below changes over the previous release:

Fixed
  • Fixed reference assembly definitions for SqlClientDiagnostic APIs #​3097
  • Fixed issue with down-level SSL/TLS version warnings #​3126
Changed
  • Dependency changes
    • Updated SNI dependency Microsoft.Data.SqlClient.SNI and Microsoft.Data.SqlClient.SNI.runtime to 6.0.2 #​3116 #​3117

v6.0.0

No changes since the last preview release

v5.2.3

This update brings the following changes since the 5.2.2 release:

Fixed
  • Fixed possible NullPointerException during socket receive (PR #​3284)
  • Fixed inconsistencies between source and reference projects (PR #​3124)
  • Adjusted retry logic to allow errors with negative numbers to be considered transient (PR #​3185)
Changed

v5.2.2

Fixed
  • Fixed AcquireTokenAsync timeout handling for edge cases in ActiveDirectoryAuthenticationProvider. #​2650
  • Fixed issue with Socket.Connect in managed SNI. #​2779
  • Fixed path for AssemblyAttributes in obj folder causing NET 8.0 assembly to appear in NET 6.0 dll. #​2789
  • Fixed SSPI retry negotiation with default port in .NET. #​2815
  • Fixed ArgumentNullException on SqlDataRecord.GetValue when using user-defined data type on .NET. #​2816
  • Fixed pending data with SqlDataReader against an encrypted column. #​2817
Changed
  • Upgraded Azure.Identity version from 1.11.3 to 1.11.4 #​2648 to address CVE-2024-35255.
  • Upgraded Microsoft.Identity.Client version from 4.60.0 to 4.61.3 #​2648 to address CVE-2024-35255.
  • Added caching to TokenCredential objects to take advantage of token caching. #​2775

v5.2.1

This update brings the below changes over the previous release:

Fixed
  • Fixed connection errors on Linux when Data Source property contains both named instance and port #​2436
  • Fixed SqlConnection.FireInfoMessageEventOnUserErrors when set to true throws an exception #​2505
  • Fixed exception when using DATETIMEOFFSET(n) in a TVP if n is 1, 2, 3, or 4 #​2506
  • Reverted PR #​1983 which caused connection failure delays when using OpenAsync #​2507
  • Fixed SqlConnection.Clone() to include AccessTokenCallback #​2527
Changed
  • Upgraded Azure.Identity version from 1.10.3 to 1.11.3 #​2492, #​2528
  • Upgraded Microsoft.Identity.Client version from 4.56.0 to 4.60.3 #​2492
  • Code Health improvements: #​2467

v5.2.0

Added
  • Added a new AccessTokenCallBack API to SqlConnection. #​1260
  • Added SqlBatch support on .NET 6+ #​1825, #​2223,#​2371, #​2373
  • Added support of SqlDiagnosticListener on .NET Standard. #​1931
  • Added new property RowsCopied64 to SqlBulkCopy. #​2004
  • Added support for the SuperSocketNetLib registry option for Encrypt on .NET on Windows. #​2047
  • Added the ability to generate debugging symbols in a separate package file #​2137
  • Added Workload Identity authentication support #​2159, #​2264
  • Added support for Big Endian systems #​2170
  • Added support for Georgian collation #​2194
  • Added Localization support on .NET #​2210
  • Added .NET 8 support #​2230
  • Added explicit version for major .NET version dependencies on System.Runtime.Caching 8.0.0, System.Configuration.ConfigurationManager 8.0.0, and System.Diagnostics.
  • DiagnosticSource 8.0.0 #​2303
Fixed
  • Fixed Always Encrypted secure enclave retry logic for async queries. #​1988
  • Fixed activity correlator to continue use of same GUID for connection activity. #​1997
  • Fixed behavior when error class is greater than 20 on connection retry. #​1953
  • Fixed error message when symmetric key decryption failed using Always Encrypted. #​1948
  • Fixed TransactionScope connection issue when Enlist is enable, Pooling is disabled and network connection type is Redirect. #​1960
  • Fixed TDS RPC error on large queries in SqlCommand.ExecuteReaderAsync. #​1936
  • Fixed throttling of token requests by calling AcquireTokenSilent. #​1925
  • Fixed Linux code coverage result in Build proj. #​1950
  • Fixed NullReferenceException in GetBytesAsync. #​1906
  • Fixed Transient fault handling issue with OpenAsync. #​1983
  • Fixed invariant mode checks. #​1917
  • Fixed GC behavior in TdsParser by adding array rental capability in TryReadPlpUnicodeChars. #​1866
  • Fixed socket synchronization issue during connect in managed SNI. #​1029
  • Fixed issue with SqlConnectionStringBuilder property indexer not supporting non-string values. #​2018
  • Fixed SqlDataAdapter.Fill and configurable retry logic issue on .NET Framework. #​2084
  • Fixed SqlConnectionEncryptOption type conversion by introducing the SqlConnectionEncryptOptionConverter attribute when using appsettings.json files. #​2057
  • Fixed th-TH culture info issue on Managed SNI. #​2066
  • Fixed an issue when using the Authentication option, but not encrypting on .NET Framework where the server certificate was being incorrectly validated #​2224
  • Fixed a deadlock problem for distributed transactions when on .NET #​2161
  • Fixed an issue with connecting to named instances on named pipes in managed SNI (Linux/macOS) #​2142
  • Fixed LocalDb connection issue with an invalid source when using managed SNI #​2129
  • Fixed an AccessViolationException when using a SQL Express user instance #​2101
  • Fixed a metadata query issue when connecting to Azure SQL Edge #​2099
  • Fixed file version information for .NET and .NET Standard binaries #​2093
  • Fixed the SPN sent for a named instance when using Kerberos authentication on Linux/macOS #​2240
  • Fixed connection to unsubscribe from transaction completion events before returning it to the connection pool #​2301
  • Fixed InvalidCastException when reading an Always Encrypted date or time column #​2275
  • Fixed token caching to prevent expired access tokens from being reused in a connection pool #​2273
Changed

v5.1.7

This update brings the following changes since the 5.1.6 release:

Fixed
  • Fixed possible NullPointerException during socket receive (PR #​3285)
  • Fixed inconsistencies between source and reference projects (PR #​3180)
Changed

v5.1.6

Fixed
  • Fixed Transient fault handling issue with OpenAsync. #​1983 #​2508
  • Fixed AcquireTokenAsync timeout handling for edge cases in ActiveDirectoryAuthenticationProvider. #​2706
  • Fixed pending data with SqlDataReader against an encrypted column. #​2618 #​2818
Changed

v5.1.5

This update brings the below changes over the previous release:

Fixed
  • Fixed connection to unsubscribe from transaction completion events before returning it to the connection pool #​2321
  • Fixed InvalidCastException when reading an Always Encrypted date or time column #​2324
Changed
  • Changed Microsoft.IdentityModel.JsonWebTokens and Microsoft.IdentityModel.Protocols.OpenIdConnect version 6.24.0 to 6.35.0 #​2320 to address CVE-2024-21319

v5.1.4

This update brings the below changes over the previous release:

Fixed
  • Fixed a deadlock problem for distributed transactions when on .NET.
Changed

v5.1.3

This update brings the below changes over the previous release:

Fixed
  • Fixed encryption downgrade issue. CVE-2024-0056
  • Fixed certificate chain validation logic flow.

v5.1.2

This update brings the following changes since the 5.1.6 release:

Fixed
  • Fixed possible NullPointerException during socket receive (PR #​3285)
  • Fixed inconsistencies between source and reference projects (PR #​3180)
Changed

v5.1.1

This update brings the following changes since the 5.1.6 release:

Fixed
  • Fixed possible NullPointerException during socket receive (PR #​3285)
  • Fixed inconsistencies between source and reference projects (PR #​3180)
Changed

v5.1.0

This update brings the below changes over the previous release:

Fixed
  • Fixed thread safety of transient error list in configurable retry logic. #​1882
  • Fixed deadlock when using SinglePhaseCommit with distributed transactions. #​1801
  • Fixed Dedicated Admin Connections (DAC) to localhost in managed SNI. #​1865
Changed
  • Updated Microsoft.Data.SqlClient.SNI (.NET Framework dependency) and Microsoft.Data.SqlClient.SNI.runtime (.NET Core/Standard dependency) version to 5.1.0. #​1889 which includes fix for AppDomain crash in issue #​1418, TLS 1.3 Support, removal of ARM32 binaries, and support for the ServerCertificate option.
  • Code health improvements #​1867 #​1849

v5.0.2

Fixed
  • Fixed memory leak regression from #​1785 using a DisposableTemporaryOnStack struct. #​1980
  • Fixed TransactionScope connection issue when Enlist is enabled, Pooling is disabled, and Network Connection Type is set to Redirect. #​1978
  • Fixed an incorrect exception when a symmetric key fails to decrypt a column using Always Encrypted. #​1977
  • Fixed TDS RPC error on large queries in SqlCommand.ExecuteReaderAsync. #​1976
  • Fixed deadlock when using SinglePhaseCommit with distributed transactions. #​1975

v5.0.1

Fixed
  • Fixed missing HostNameInCertificate connection string property in .NET Framework. #​1782
  • Fixed async deadlock issue when sending attention fails due to network failure. #​1783
  • Fixed Null Reference Exception on assigning null to SqlConnectionStringBuilder.Encrypt. #​1784
  • Fixed ReadAsync() behavior to register Cancellation token action before streaming results. #​1785
  • Fixed hang on infinite timeout and managed SNI. #​1798
  • Fixed Default UTF8 collation conflict. #​1799
Changed
  • Updated Microsoft.Data.SqlClient.SNI (.NET Framework dependency) and Microsoft.Data.SqlClient.SNI.runtime (.NET Core/Standard dependency) version to 5.0.1 #​1795, which includes the fix for AppDomain crash introducing in issue #​1418.

v5.0.0

This update brings the below changes over the previous release:

Added
  • Added support for TDS 8. To use TDS 8, users should specify Encrypt=Strict in the connection string. #​1608
  • Added TDS 8 version for TDSLogin. #​1657
Fixed
  • Fixed null SqlBinary as rowversion. #​1688
  • Fixed KeyNotFoundException for the FailoverPartner key on SQL servers with availability group configured. #​1614
  • Fixed small inconsistency between netcore and netfx for EncryptionOptions. #​1672
  • Fixed Microsoft.SqlServer.Server netcore project package reference. #​1654
Changed
  • Updated AuthProviderInfo struct to be matched the changes in native SNI for TDS 8 server certificate validation. #​1680
  • Updated default system protocol for TDS 8 on managed code. #​1678
  • Updated Microsoft.Data.SqlClient.SNI (.NET Framework dependency) and Microsoft.Data.SqlClient.SNI.runtime (.NET Core/Standard dependency) version to 5.0.0. #​1680
  • Updated IdentityModel dependency from 6.8.0 to 6.21.0 and IdentityClient from 4.32.2 to 4.45.0. #​1646
  • Changed from union overlay design to reflected interfaces for SqlTypes. 1647

v4.1.1

Fixed
  • Fixed connection failure by not requiring Certificate Revocation List (CRL) check during authentication. #​1706
  • Parallelize SSRP requests on Linux and macOS when MultiSubNetFailover is specified. #​1708, #​1746
  • Added CommandText length validation when using stored procedure command types. #​1709
  • Fixed NullReferenceException during Azure Active Directory authentication. #​1710
  • Fixed null SqlBinary as rowversion. #​1712
  • Fixed table's collation overriding with default UTF8 collation. #​1749

v4.1.0

Added
  • Added new Attestation Protocol None for VBS enclave types. This protocol will allow users to forgo enclave attestation for VBS enclaves. #​1419 #​1425

v4.0.6

Fixed
  • Fixed connection to unsubscribe from transaction completion events before returning it to the connection pool #​2301 #​2435
  • Fixed AcquireTokenAsync timeout handling for edge cases in ActiveDirectoryAuthenticationProvider #​2707
Changed

v4.0.5

Fixed
  • Fixed encryption downgrade issue. CVE-2024-0056
  • Fixed certificate chain validation logic flow.

v4.0.4

Fixed
  • Fixed Always Encrypted secure enclave retry logic for async queries. #​1988
  • Fixed LocalDb and managed SNI by improving the error messages and avoid falling back to the local service. #​2129
  • Fixed .NET and .NET Standard file version. 2093
  • Fixed activity correlator to continue use of same GUID for connection activity. #​1997

v4.0.3

Fixed
  • Fixed throttling of token requests by calling AcquireTokenSilent in AAD Integrated/Password flows when the account is already cached.#​1995
  • Fixed TDS RPC error on large queries in SqlCommand.ExecuteReaderAsync.#​1987

v4.0.2

Fixed
  • Fixed connection failure by not requiring Certificate Revocation List (CRL) check during authentication. #​1718
  • Parallelize SSRP requests on Linux and macOS when MultiSubNetFailover is specified. #​1720, #​1747
  • Added CommandText length validation when using stored procedure command types. #​1721
  • Fixed NullReferenceException during Azure Active Directory authentication. #​1722
  • Fixed null SqlBinary as rowversion. #​1724
  • Fixed table's collation overriding with default UTF8 collation. #​1750

v4.0.1

Added

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

Fixed
  • 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

v4.0.0

Added
  • Added missing SqlClientLogger class to .NET Core refs and missing SqlClientLogger.LogWarning method in .NET Framework refs #​1392
Changed
  • Avoid throwing unnecessary exception when an invalid SqlNotificationInfo value is received from SQL Server #​1378
  • Updated Microsoft.Data.SqlClient.SNI (.NET Framework dependency) and Microsoft.Data.SqlClient.SNI.runtime (.NET Core/Standard dependency) version to v4.0.0 #​1391

v3.1.7

Fixed
  • Fixed connection to unsubscribe from transaction completion events before returning it to the connection pool. #​2301 #​2434
  • Fixed AcquireTokenAsync timeout handling for edge cases in ActiveDirectoryAuthenticationProvider. #​2709
  • Fixed the signing issue with Microsoft.Data.SqlClient assembly. #​2789
Changed

v3.1.5

Fixed
  • Fixed encryption downgrade issue. CVE-2024-0056
  • Fixed certificate chain validation logic flow.

v3.1.4

Fixed
  • Fixed Always Encrypted secure enclave retry logic for async queries. #​1988
  • Fixed LocalDb and managed SNI by improving the error messages and avoid falling back to the local service. #​2129
  • Fixed .NET and .NET Standard file version. 2093
  • Fixed activity correlator to continue use of same GUID for connection activity. #​1997
  • Fixed FormatException when event source tracing is enabled. #​1291

v3.1.3

Fixed
  • Fixed throttling of token requests by calling AcquireTokenSilent in AAD Integrated/Password flows when the account is already cached.#​1926
  • Fixed TDS RPC error on large queries in SqlCommand.ExecuteReaderAsync.#​1939

v3.1.2

Added
  • Added Windows ARM64 support when targeting .NET Framework. #​1908
Fixed
  • Fixed thread safety of transient error list in configurable retry logic. #​1911
  • Fixed deadlock when using SinglePhaseCommit with distributed transactions. #​1912
  • Fixed Default UTF8 collation conflict. #​1910
  • Added CommandText length validation when using stored procedure command types. #​1909

v3.1.1

Fixed
  • Fixed null SqlBinary as rowversion. #​1700
  • Fixed Kerberos authentication failure when using .NET 6. #​1696
  • Fixed NullReferenceException during Azure Active Directory authentication. #​1695
  • Removed union overlay design and use reflection in SqlTypeWorkarounds. #​1699

[v3.1.0](https://redirect.github.com/dotnet/sqlclient/blob/HEAD/CHANGELOG.md#Stable-release-310---2022-03-


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@renovate renovate bot force-pushed the renovate/microsoft.data.sqlclient-6.x branch from 7f211b8 to b0add5e Compare August 15, 2025 19:47
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