1) Navigate to your World of Warcraft Install. By default his could be located at "C:\Users\Public\Games\World of Warcraft", "C:\Program Files(x86)\World of Warcraft". or "C:\Program Files\World of Warcraft".
2)Rename your Fonts, Interface, and WTF Folders
3)Open the Folder named "Data" and Locate the Files "World.MPQ" and "World.MPQ.lock"
3)Delete BOTH of these Files
4)Navigate to C:\ProgramData\Battle.net and Locate the Folders "Agent", "Client", and "Setup"
5)Delete ALL THREE(3) of these Folders
6)Open Control Panel and Navigate to Systems and Security and locate the Option "Allow a program through Windows Firewall" under the Heading of "Windows Firewall".
7)Click the "Change Settings" button IF the "Allow another program..." button below is grayed out, and then click on the "Allow another program..." button
8)Click the "Browse" button and navigate to your World of Warcraft Install Folder (Referenced in Step #1)
9)Select "World of Warcraft Launcher.exe" and Click "Open" and then "Add". This must be REPEATED for both "Wow.exe" AND "Wow-64.exe". (Wow-64.exe only if applicable)
10)Right-Click your "World of Warcraft" Desktop Icon and Choose the "Properties" option.
11)Navigate to the "Compatibility" Tab and Check the Box for "Run this program as an administrator" under the "Privilege Level" Heading. Click the "Apply" button and then Click the "OK" button
12)Start World of Warcraft from your Desktop Shortcut. "World.MPQ" will either begin to download right away or after a short setup runs after you select "Play" that will then download "World.MPQ". "World.MPQ" is a roughly 3.13 GB file and will require 10-20 minutes to download.
13)Attempt to load a character in to the world and run around any areas that have been crashing you to validate that the repair was completed successfully.
14)Close the game and re-enable your addons by deleting the newly created "Interface" and "WTF" Folders and renaming your previously renamed Folders (step #2) back to the original.
15)Repeat step #13 and you should be good to go.
