You would like to know what the implications are when you disable TLS 1.0 or TLS 1.1 on the Symantec Endpoint Protection Manager (SEPM) computer at the Operating System level.
Disabling TLS 1.0 and TLS 1.1 at the Operating System level will have some implications on a case by case basis.
It will be impossible to connect to some websites which are still using a TLS version lower than 1.2
Remote Desktop Protocol (RDP) connectivity to the SEPM computer would be hampered, since it typically uses TLS 1.0. You will need to apply the relevant patches in order to enable RDP over TLS 1.2.
If SEPM is configured to use a remote MS-SQL database, and both computers are configured only to use TLS 1.2, connectivity of SEPM to the database may hampered, since the SEPM to database connection uses TLS 1.0 for performance reasons.
SEPM and MS-SQL or embedded database on the same computer
SEPM to Symantec Endpoint Protection (SEP) Clients communications. Hardening of the TLS versions on the Operating System level will not have any impact, as it is the underlying JDK which is responsible for TLS support between SEPM and its SEP clients
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