Azure AD Connect TLS1.2 fix

>[!ALERT]
>Azure AD Connect now requires TLS1.2 as the default security protocol. If you receive an error attempting to install or run the Azure AD Connect tool, please open a new Powershell window as Administrator and enter the following command:
>
>```Powershell
>;[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 
>```