I downloaded the game and there is no playable file.

Hey guys hello all.
A friend of mine just invited me to play with her this server, but I download first the Warth of the Lich King (old) and there is no playable file to open the game there.
I also download the Wrath of the Lich king and also no playable icon.

How can I play this game? What do I need download?

Thank you.

All clients contain WoW.exe file. If it's not there, your antivirus might have removed it.