How to disable SSL v2,3 and TLS v1.0 on Windows Server
1. Log into your Windows server via Remote Desktop Connection.
2. Then you need to open the registry editor and change values for the specified keys bellow. Go to Start > Run (or directly to Search on newer Windows versions), type regedit and click OK.
3. Locate the following registry key:
HKey_Local_Machine\System\CurrentControlSet\Control\SecurityProviders \SCHANNEL\Protocols\SSL 2.0\Server
4. On the Edit menu, click Add Value.
In the Data Type list, click DWORD.
In the Value Name box, type Enabled, and then click OK.
In case the value is present, double-click the value to edit it.
Type 00000000 in Binary Editor to set the value of the new key equal to "0".
Repeat the steps for SSL v3 and TLS v1.0 as opening the correct protocol under Protocols.