Hi @Shiva Prasad reddy ,
We can using SSMS 18.8 connect to any versions of SQL server.
> A connection was successfully established with the server, but then an error occurred during the login process. (provider: SSL Provider,
>error: 0 - An existing connection was forcibly closed by the remote host.) (Microsoft SQL Server, Error: 10054)
You need to check your SSL and TLS settings.
Check out this KB 3135244. The settings between the client and server should be somewhat consistent (i.e. if the server only allows 1.2 and the client only supports 1.0 I think you might run into issues). Also read through the known issues on that page. Updating to a build that supports TLS 1.2 might resolve your issue.
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