STH ABOUT BEAT TESTING

 
Good morning.

I have been using metatrader for about 20 days. I thinks it is the best trader software, and it is never disconnected. However, metatrader4 cannot be connected for several times recently. The server is never beta testing ago? Could you tell me the reason. Thanks!
 
Please check your connection to Internet.
Have you installed firewall program that may deny access via 443 port?
This port is used by MetaTrader 4 Client Terminal for quotation receiving.
Also please ask your Internet-provider or local network administrator about
connection via 443 port.