Upgrading Exchange 2013 CU8 to CU23

Hello,

Good Day!!!

We have 2 Exchange 2013 CU8 member of the DAG, our company requires us to use TLS 1.2 in the Exchange.

Accordingly TLS 1.2 supports starting from CU19 above and the available to download in Microsoft is CU23.

I am looking for detailed steps on how to Upgrade to CU23 and how to enable TLS 1.2.

Your HELP and Support will be very much appreciated.

Thanks very much.