Game not working after downloading client

Hey guys,

I just downloaded MoP for Windows. I tried to launch the game using WoW.exe. For some reason, I am having this error saying

Data/enGB/wow-update-enGB-18273.MPQ: World of Warcraft can’t make a required change to an archive file. Be sure you have write permission for the World of Warcraft folder or try running the game in administrator mode. For more information, see: https://battle.net/support/article/6910

I tried to run the game as an admin and it's the same thing.

Can someone help me with this please?

Thank you in advance!

follow these steps:
1) Restart your PC
2) close your Torrent client and move your WoW folder away from your Torrent's download destination
3) now right click on WoW folder> Properties> remove "read-only".

Yeah it's working now, however, I can only see Frostwolf for the realm? I used to play Sargeras several years ago. It's a PvP and PvE community. How do I go about adding realms? thank you man

The only MoP realm right now is Frostwolf.