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1. MICROSTRATEGY DESKTOP ODBC DRIVER FOR SQL SERVER INSTALL
2. MICROSTRATEGY DESKTOP ODBC DRIVER FOR SQL SERVER MAC

Windows Server 2019 RTM and later versions.Updates that supersede KB4537806 and KB4540670 for the respective OS versions.Windows versions that contain the leading zero fixes for TLS_DHE The following list the operating system version according to the updates that are installed.

MICROSTRATEGY DESKTOP ODBC DRIVER FOR SQL SERVER INSTALL

It's recommended to install the updates since they enhance the conformance to TLS_DHE specifications. To fix this issue, make sure that both the client and server involved in a connection are running Windows that have the leading zero fixes for TLS_DHE installed. For more information, see the network snippet in the "More information" section. The use of one of the affected cipher suites can be identified in the "Server Hello" packet. The error messages are returned when the secure TLS handshake is negotiated between the client and the server by using TLS_DHE cipher suite. This issue is typically seen when interacting with non-Windows-based crypto implementations and can cause intermittent negotiation failures.

MICROSTRATEGY DESKTOP ODBC DRIVER FOR SQL SERVER MAC

When a Diffie-Hellman key exchange group has leading zeros, unpatched computers may incorrectly compute the mac by not accounting for the padded zeros. TLS connections randomly fail if leading zeros are computed differently by the TLS client and TLS Servers. The TLS client and server need to calculate keys exactly the same way otherwise they get different results. Meanwhile, all Windows versions that released before that don't contain the leading zero updates. Windows 10, version 1511 and later versions of Windows, including Window Server 2016 or Windows 10, version 1607 that has updates released on Feb 25thor later updates installed, contains a leading zero update.

Other client-server applications may encounter a similar issue.This issue also occurs when an application running on Windows Server 2012 R2 tries to connect to SQL Server running on Windows Server 2019.Depending on the provider or driver that you're using, the error message may slightly vary.