WotLK World of Warcraft patch required,failed to apply patch

[Sylpho]

I just downloaded WoW,when i want to log in it says that the update i requiered and after that i need to restart the client but i got this message:
failed to apply patch,how can i fix this problem please help me guys.

[skullatbash]

you need to log-in by using Warmane AccountName, not Email address

[Sylpho]

I tryed it but i couldnt log in.
But thanks mate. :)

[skullatbash]

what expansion? MoP? are using 5.4.2 or 5.4.8 client?

[Zelta]

If the client is stuck with the updated after logging in with username and password it might have been modified with the update you just accepted.
So redownloading WOTLK client is your best option (in the future, always make sure to log in with your username).