Microsoft ODBC Driver 18 for SQL Server x86 Version 18.5.1.1
Release Date
3/17/2025
Bug Fix?
Yes
Minor Release?
Yes
Patch Notes

Feature addedtDetails$$$Packet Size optiontExpose the Packet Size as a connection string option.$$$Include Microsoft SQL Driver Authentication library (mssql-auth.dll) in the installertNow included in the base driver installation; the installer installs and upgrades the Microsoft SQL Driver Authentication library.$$$Added 3 new languagestAdded support for 3 new languages Czech; Polish; and Turkish.$$$Install all featurestModify installer to install both features (Core and SDK) by default.$$$Bug fixes.tBug fixes.
Microsoft ODBC Driver 18 for SQL Server x64 Version 18.5.1.1
Release Date
3/16/2025
Bug Fix?
Yes
Minor Release?
Yes
Patch Notes

Feature addedtDetails$$$Packet Size optiontExpose the Packet Size as a connection string option.$$$Include Microsoft SQL Driver Authentication library (mssql-auth.dll) in the installertNow included in the base driver installation; the installer installs and upgrades the Microsoft SQL Driver Authentication library.$$$Added 3 new languagestAdded support for 3 new languages Czech; Polish; and Turkish.$$$Install all featurestModify installer to install both features (Core and SDK) by default.$$$Bug fixes.tBug fixes.
Microsoft ODBC Driver 18 for SQL Server x86 Version 18.4.1.1
Release Date
7/31/2024
Bug Fix?
Yes
Minor Release?
Yes
Patch Notes

New item Details$$$Microsoft Entra IDt- Renamed all occurrences of Azure Active Directory to Microsoft Entra ID. See New name for Azure Active Directory for more information.$$$$$$Bug fixes in the Microsoft ODBC Driver 18.4.1.1 for SQL Server$$$Fix crashes when receiving invalid data from server$$$Fix sending of null data for fixed-length types using DAE$$$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 crashes under low-memory conditions
Microsoft ODBC Driver 18 for SQL Server x64 Version 18.4.1.1
Release Date
7/31/2024
Bug Fix?
Yes
Minor Release?
Yes
Patch Notes

New item Details$$$Microsoft Entra IDt- Renamed all occurrences of Azure Active Directory to Microsoft Entra ID. See New name for Azure Active Directory for more information.$$$$$$Bug fixes in the Microsoft ODBC Driver 18.4.1.1 for SQL Server$$$Fix crashes when receiving invalid data from server$$$Fix sending of null data for fixed-length types using DAE$$$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 crashes under low-memory conditions
Microsoft ODBC Driver 18 for SQL Server x86 Version 18.3.3.1
Release Date
4/9/2024
Bug Fix?
Yes
Minor Release?
No
Patch Notes

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
Microsoft ODBC Driver 18 for SQL Server x64 Version 18.3.3.1
Release Date
4/9/2024
Bug Fix?
Yes
Minor Release?
No
Patch Notes

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
Microsoft ODBC Driver 18 for SQL Server x86 Version 18.3.2.1
Release Date
10/10/2023
Bug Fix?
Yes
Minor Release?
No
Patch Notes

Bug fixes in the Microsoft ODBC Driver 18.3.2 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
Microsoft ODBC Driver 18 for SQL Server x64 Version 18.3.2.1
Release Date
10/10/2023
Bug Fix?
Yes
Minor Release?
No
Patch Notes

Bug fixes in the Microsoft ODBC Driver 18.3.2 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
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