Odbc release18.6.2 (#36991)

* Odbc release18.6.2

* Fix for Warning: h1-missing

* Acrolinx fixes

Author: mcimflms

docs/connect/odbc/bug-fixes.md

@@ -4,7 +4,7 @@ description: This page contains a listing of bugs fixed in each release of the M
 author: David-Engel
 ms.author: davidengel
 ms.reviewer: randolphwest
-ms.date: 12/29/2025
+ms.date: 03/31/2026
 ms.service: sql
 ms.subservice: connectivity
 ms.topic: release-notes
@@ -15,9 +15,20 @@ helpviewer_keywords:
 
 This page contains a listing of bugs fixed in each release of the [!INCLUDE [msCoName](../../includes/msconame-md.md)] ODBC Driver for [!INCLUDE [ssNoVersion](../../includes/ssnoversion-md.md)], starting with the most recent versions.
 
+### Bug fixes in the Microsoft ODBC Driver 18.6.2.1 for SQL Server
+
+- Fix SQL_ATTR_PARAMS_PROCESSED_PTR updates so the number of processed parameter sets is reported correctly when executing parameter arrays.
+- Fix SQL_ATTR_PARAMS_PROCESSED_PTR and row counting when SQL_PARAM_IGNORE is used in parameter arrays.
+- Fix segmentation fault when calling SQLNumResultCol in describe-only scenarios where no parameter bindings are present.
+- Fix bcp_bind to correctly handle consecutive field terminators without misinterpreting them as empty fields.
+- Fix RPM packaging rules to allow installing multiple driver versions side by side.
+- Fix XA (X/Open distributed transaction) recovery to compute transaction identifiers correctly and avoid missing recoverable transactions.
+- Fix segmentation fault on handling of NULL values in table-valued parameter (TVP) arguments.
+
+
 ### Bug fixes in the Microsoft ODBC Driver 18.6.1.1 for SQL Server
 
-- Fix TDS packet size in BID trace
+- Fix Tabular Data Stream (TDS) packet size handling in Built-In Diagnostics (BID) traces.
 
 ### Bug fixes in the Microsoft ODBC Driver 18.5.1.1 for SQL Server
 
@@ -32,22 +43,22 @@ This page contains a listing of bugs fixed in each release of the [!INCLUDE [msC
 - Fix 10-minute delay upon disconnection after timeout
 - Fix memory leak upon disconnection when an error occurs
 - Fix memory leak upon reconnection with Strict encryption
-- Fix intermittent crash when connecting with Strict encryption and TLS 1.3
+- Fix intermittent crash when connecting with Strict encryption enabled and Transport Layer Security (TLS) 1.3.
 - Fix crashes under low-memory conditions
 
 ### Bug fixes in the Microsoft ODBC Driver 18.3.3.1 for SQL Server
 
 - Fix crashes when receiving invalid data from server
 - Fix infinite loop when receiving invalid data from server
-- Fix App Service Containers MSI Authentication
+- Fix App Service Containers managed identity (formerly Managed Service Identity, MSI) authentication.
 
 ### Bug fixes in the Microsoft ODBC Driver 17.10.6.1 for SQL Server
 
 - Fix crashes when receiving invalid data from server
 - Fix infinite loop when receiving invalid data from server
 - Fix a crash when attempting to connect under low-memory conditions
 - Fix memory leak upon reconnect
-- Fix App Service Containers MSI Authentication
+- Fix App Service Containers managed identity (formerly Managed Service Identity, MSI) authentication.
 
 ### Bug fixes in the Microsoft ODBC Driver 18.3.2 for SQL Server
 
@@ -65,15 +76,15 @@ This page contains a listing of bugs fixed in each release of the [!INCLUDE [msC
 
 ### Bug fixes in the Microsoft ODBC Driver 18.2.2 for SQL Server
 
-- Fix a crash when retrieving data with AutoTranslate option off
+- Fix a crash when retrieving data with Auto-Translate option off
 - Fix partial writes on Linux in presence of signals
 - Fix crashes when receiving invalid data from server
 - Fix memory leak when processing encrypted columns
 - Fix errors with long enclave queries
 
 ### Bug fixes in the Microsoft ODBC Driver 17.10.4.1 for SQL Server
 
-- Fix a crash when retrieving data with AutoTranslate option off
+- Fix a crash when retrieving data with `AutoTranslate` option off
 - Fix partial writes on Linux in presence of signals
 - Fix crashes when receiving invalid data from server
 - Fix memory leak when processing encrypted columns
@@ -126,7 +137,7 @@ This page contains a listing of bugs fixed in each release of the [!INCLUDE [msC
 
 - Fix intermittent issue with polling for first successful connection when multiple IP addresses are resolved.
 - Fix missing dependency in Debian package.
-- Fix for only using ADAL when required.
+- Fix for only using Microsoft Authentication Library when required.
 - Fix issue with idle connection resiliency when Kerberos auth was used.
 
 ### Bug fixes in the Microsoft ODBC Driver 17.9 for SQL Server
@@ -141,8 +152,8 @@ This page contains a listing of bugs fixed in each release of the [!INCLUDE [msC
 
 - Fix for restrictions on connection string regarding usage of `UID` and `PWD` keywords
 - Fix for inconsistent fonts in non-English dialogs
-- Fix issue with having multiple connections with different AKV credentials
-- Fix issue with NVDA not reading connection test results in DSN configuration UI
+- Fix issue with having multiple connections using different Azure Key Vault (AKV) credentials.
+- Fix issue with NonVisual Desktop Access (NVDA) not reading connection test results in the Data Source Name (DSN) configuration UI.
 
 ### Bug fixes in the Microsoft ODBC Driver 17.7.2 for SQL Server
 
@@ -161,7 +172,7 @@ This page contains a listing of bugs fixed in each release of the [!INCLUDE [msC
 
 ### Bug fixes in the Microsoft ODBC Driver 17.6 for SQL Server
 
-- Fix ADAL error when authenticating with a federated account (Windows)
+- Fix Microsoft Authentication Library error when authenticating with a federated account (Windows)
 - Fix an issue where the driver becomes unresponsive when a timeout occurs during an asynchronous notification operation
 - Fix driver reference count upon upgrade in Alpine Linux
 - Fix libc6 dependency version for Ubuntu

docs/connect/odbc/download-odbc-driver-for-sql-server.md

@@ -3,7 +3,7 @@ title: Download ODBC Driver for SQL Server
 description: Download the Microsoft ODBC Driver for SQL Server to develop native-code applications that connect to SQL Server and Azure SQL Database.
 author: David-Engel
 ms.author: davidengel
-ms.date: 03/25/2026
+ms.date: 03/31/2026
 ms.service: sql
 ms.subservice: connectivity
 ms.topic: concept-article
@@ -33,19 +33,19 @@ Linux and macOS don't require this component. For Linux and macOS prerequisites,
 
 The redistributable installer for Microsoft ODBC Driver 18 for SQL Server installs the client components, which are required during run time to take advantage of newer SQL Server features. It optionally installs the header files needed to develop an application that uses the ODBC API. Starting with version 17.4.2, the installer also includes and installs the Microsoft Active Directory Authentication Library (ADAL.dll).
 
-Version 18.6.1.1 is the latest general availability (GA) version. If you have a previous version of Microsoft ODBC Driver 18 for SQL Server installed, installing 18.6.1.1 upgrades it to 18.6.1.1. The Microsoft ODBC Driver 18 for SQL Server can be installed side by side with Microsoft ODBC Driver 17 for SQL Server.
+Version 18.6.2.1 is the latest general availability (GA) version. If you have a previous version of Microsoft ODBC Driver 18 for SQL Server installed, installing 18.6.2.1 upgrades it to 18.6.2.1. The Microsoft ODBC Driver 18 for SQL Server can be installed side by side with Microsoft ODBC Driver 17 for SQL Server.
 
-:::image type="icon" source="../../includes/media/download.svg" border="false"::: **[Download Microsoft ODBC Driver 18 for SQL Server (x64)](https://go.microsoft.com/fwlink/?linkid=2345415)**  
-:::image type="icon" source="../../includes/media/download.svg" border="false"::: **[Download Microsoft ODBC Driver 18 for SQL Server (x86)](https://go.microsoft.com/fwlink/?linkid=2346006)**  
-:::image type="icon" source="../../includes/media/download.svg" border="false"::: **[Download Microsoft ODBC Driver 18 for SQL Server (ARM64)](https://go.microsoft.com/fwlink/?linkid=2345416)**  
+:::image type="icon" source="../../includes/media/download.svg" border="false"::: **[Download Microsoft ODBC Driver 18 for SQL Server (x64)](https://go.microsoft.com/fwlink/?linkid=2358430)**  
+:::image type="icon" source="../../includes/media/download.svg" border="false"::: **[Download Microsoft ODBC Driver 18 for SQL Server (x86)](https://go.microsoft.com/fwlink/?linkid=2358335)**  
+:::image type="icon" source="../../includes/media/download.svg" border="false"::: **[Download Microsoft ODBC Driver 18 for SQL Server (ARM64)](https://go.microsoft.com/fwlink/?linkid=2358431)**  
 
 > [!NOTE]
-> Use the x86 installer for 32-bit machines, or the x64 installer to install both 64-bit and 32-bit drivers on an x64 machine, or the arm64 installer to install both 64-bit and 32-bit drivers on an ARM64 machine.
+> Use the x86 installer on 32-bit machines, the x64 installer on x64 machines, or the arm64 installer on ARM64 machines. The x64 and arm64 installers install both 64-bit and 32-bit drivers.
 
-### Version information
+### Version information    
 
-- Release number: 18.6.1.1
-- Released: December 17, 2025
+- Release number: 18.6.2.1
+- Released: March 31, 2026
 
 > [!NOTE]
 > If you're accessing this page from a non-English language version, and want to see the most up-to-date content, select **Read in English** at the top of this page. You can download different languages from the US-English version site by selecting [available languages](#available-languages).
@@ -54,14 +54,14 @@ Version 18.6.1.1 is the latest general availability (GA) version. If you have a
 
 This release of Microsoft ODBC Driver for SQL Server can be installed in the following languages:
 
-Microsoft ODBC Driver 18.6.1.1 for SQL Server (x64):
-[Chinese (Simplified)](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x804) | [Chinese (Traditional)](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x404) | [Czech](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x405) | [English (United States)](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x409) | [French](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x40c) | [German](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x407) | [Italian](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x410) | [Japanese](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x411) | [Korean](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x412) | [Polish](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x415) | [Portuguese (Brazil)](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x416) | [Russian](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x419) | [Spanish](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x40a) | [Turkish](https://go.microsoft.com/fwlink/?linkid=2345415&clcid=0x41f)
+Microsoft ODBC Driver 18.6.2.1 for SQL Server (x64):
+[Chinese (Simplified)](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x804) | [Chinese (Traditional)](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x404) | [Czech](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x405) | [English (United States)](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x409) | [French](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x40c) | [German](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x407) | [Italian](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x410) | [Japanese](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x411) | [Korean](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x412) | [Polish](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x415) | [Portuguese (Brazil)](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x416) | [Russian](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x419) | [Spanish](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x40a) | [Turkish](https://go.microsoft.com/fwlink/?linkid=2358430&clcid=0x41f)
 
-Microsoft ODBC Driver 18.6.1.1 for SQL Server (x86):
-[Chinese (Simplified)](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x804) | [Chinese (Traditional)](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x404) | [Czech](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x405) | [English (United States)](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x409) | [French](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x40c) | [German](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x407) | [Italian](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x410) | [Japanese](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x411) | [Korean](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x412) | [Polish](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x415) | [Portuguese (Brazil)](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x416) | [Russian](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x419) | [Spanish](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x40a) | [Turkish](https://go.microsoft.com/fwlink/?linkid=2346006&clcid=0x41f)
+Microsoft ODBC Driver 18.6.2.1 for SQL Server (x86):
+[Chinese (Simplified)](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x804) | [Chinese (Traditional)](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x404) | [Czech](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x405) | [English (United States)](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x409) | [French](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x40c) | [German](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x407) | [Italian](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x410) | [Japanese](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x411) | [Korean](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x412) | [Polish](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x415) | [Portuguese (Brazil)](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x416) | [Russian](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x419) | [Spanish](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x40a) | [Turkish](https://go.microsoft.com/fwlink/?linkid=2358335&clcid=0x41f)
 
-Microsoft ODBC Driver 18.6.1.1 for SQL Server (ARM64):
-[Chinese (Simplified)](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x804) | [Chinese (Traditional)](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x404) | [Czech](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x405) | [English (United States)](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x409) | [French](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x40c) | [German](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x407) | [Italian](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x410) | [Japanese](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x411) | [Korean](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x412) | [Polish](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x415) | [Portuguese (Brazil)](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x416) | [Russian](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x419) | [Spanish](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x40a) | [Turkish](https://go.microsoft.com/fwlink/?linkid=2345416&clcid=0x41f)
+Microsoft ODBC Driver 18.6.2.1 for SQL Server (ARM64):
+[Chinese (Simplified)](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x804) | [Chinese (Traditional)](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x404) | [Czech](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x405) | [English (United States)](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x409) | [French](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x40c) | [German](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x407) | [Italian](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x410) | [Japanese](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x411) | [Korean](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x412) | [Polish](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x415) | [Portuguese (Brazil)](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x416) | [Russian](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x419) | [Spanish](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x40a) | [Turkish](https://go.microsoft.com/fwlink/?linkid=2358431&clcid=0x41f)
 
 ## Version 17
 
@@ -102,6 +102,12 @@ If you need to download the packages for offline installation, all versions are
 
 ### Alpine
 
+Packages are signed using Pretty Good Privacy (PGP) signatures to verify integrity and authenticity.
+
+- [18.6.2.1 Alpine driver ARM package](https://download.microsoft.com/download/0b3d5518-b4a7-4a2b-afc7-7ee9e967f93c/msodbcsql18_18.6.2.1-1_arm64.apk) ([PGP Signature](https://download.microsoft.com/download/0b3d5518-b4a7-4a2b-afc7-7ee9e967f93c/msodbcsql18_18.6.2.1-1_arm64.sig))
+- [18.6.2.1 Alpine driver package](https://download.microsoft.com/download/0b3d5518-b4a7-4a2b-afc7-7ee9e967f93c/msodbcsql18_18.6.2.1-1_amd64.apk) ([PGP Signature](https://download.microsoft.com/download/0b3d5518-b4a7-4a2b-afc7-7ee9e967f93c/msodbcsql18_18.6.2.1-1_amd64.sig))
+- [18.6.2.1 Alpine tools ARM package](https://download.microsoft.com/download/cad0d30f-b9b1-4765-a011-81d8a66c8b8d/mssql-tools18_18.6.2.1-1_arm64.apk) ([PGP Signature](https://download.microsoft.com/download/cad0d30f-b9b1-4765-a011-81d8a66c8b8d/mssql-tools18_18.6.2.1-1_arm64.sig))
+- [18.6.2.1 Alpine tools package](https://download.microsoft.com/download/cad0d30f-b9b1-4765-a011-81d8a66c8b8d/mssql-tools18_18.6.2.1-1_amd64.apk) ([PGP Signature](https://download.microsoft.com/download/cad0d30f-b9b1-4765-a011-81d8a66c8b8d/mssql-tools18_18.6.2.1-1_amd64.sig))
 - [18.6.1.1 Alpine driver ARM package](https://download.microsoft.com/download/9dcab408-e0d4-4571-a81a-5a0951e3445f/msodbcsql18_18.6.1.1-1_arm64.apk) ([PGP Signature](https://download.microsoft.com/download/9dcab408-e0d4-4571-a81a-5a0951e3445f/msodbcsql18_18.6.1.1-1_arm64.sig))
 - [18.6.1.1 Alpine driver package](https://download.microsoft.com/download/9dcab408-e0d4-4571-a81a-5a0951e3445f/msodbcsql18_18.6.1.1-1_amd64.apk) ([PGP Signature](https://download.microsoft.com/download/9dcab408-e0d4-4571-a81a-5a0951e3445f/msodbcsql18_18.6.1.1-1_amd64.sig))
 - [18.6.1.1 Alpine tools ARM package](https://download.microsoft.com/download/b60bb8b6-d398-4819-9950-2e30cf725fb0/mssql-tools18_18.6.1.1-1_arm64.apk) ([PGP Signature](https://download.microsoft.com/download/b60bb8b6-d398-4819-9950-2e30cf725fb0/mssql-tools18_18.6.1.1-1_arm64.sig))