If you receive this error:
Object Server 01: Fatal SQL condition during login. Error message: "[Microsoft][SQL Native Client]Encryption not supported on the client."
Probably in the Windows server the TLS 1.0 is disabled.
By default Ax 2009 use Sql Server Native Client 90 (sql server 2005) to open the DB connection. Unfortunately this driver support only the old TLS 1.0.
Owever you can create a registry key on
Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Dynamics Server\5.0\01\ENVIRONMENT
named dsn and the service use this DSN, where you can use other modern Native Client (for example the last update 11 for SQL 2012, compatible with TLS 1.2)
Whit this setup in my DEV environment, Dynamics Ax Work in Windows 2019 and Sql Server 2019 with TLS 1.0 and TLS 1.1 disabled.
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