Some mistake this as the game launching twice and close the second window again causing the update to fail WHY: The required animations are in the ARMA 2 addon folder. Go to C:\Users\...\Documents\Arm A 2\ (Path may vary depending on which version of Windows you are running.Copying them over to ARMA 2: Operation Arrowhead will also add them to where Day Z can find them. Look for your "My documents" or "Users and Documents" if you're running older versions of Windows like Windows XP or Vista.)WHY: Because most likely your monitor/system is having problems trying to open the game with the default resolution.If you’ve got an “Failed to install Battl Eye Service” error on your game, you’re not alone. It can be fixed…The following are a few methods that have helped many people.Many gamers are having this error occurring when they launch their game. You may not have to try them all; just work your way down the list until you find the one that works for you.SOLUTION: the problem ist that the combined operations batch file does not contain the ACR extension when launching combined ops.To corrct that, go to "%PATHTOSTEAM%\Steam Apps\common\arma 2 operation arrowhead" and edit the "_run A2CO.cmd" file with an editor of your choice.
You should try restarting your computer and see if this fixes your error. There may be a permission issue with your Battl Eye service that prevents it from installing successfully:1) Open File Explorer (by pressing the Windows logo key and E on your keyboard at the same time), then go to your ), then click Properties.2) Click the Compatibility tab, check Run this program as an administrator, and then click OK.The issue many have is they click "OK" and dont notice that BE is updating and so it causes the update to fail.The other method and more recent form of Battleye update is a black cmd window opens when the client launches the game.To put it simply it failed to recognize what to lunch and what addon to run.for lack of a better explanation the above actions will cause it to kick start again the correct way. After all it is a mod of a now old game and when it is trying to run mission files, database, custom scripts and pull DLC and files from everywhere it has a tendency to mess up sometimes.THEN NAVIGATING TO THE LOCAL FILES AND VERIFYING THE INTEGRITY OF THE GAME CACHE. This is just an extension on missing Czech republic DLC error WHY: (solution 1) Steam writes your serial numbers into your registry , but cannot do it if it doesn't have the rights to edit registry.Running both games means that Steam will re-write both serial numbers for both games. Now on the LOCAL FILES tab verify integrity of game cache. WHY: ARMA 2 does its best to try and connect to Battl Eye's update server, but sometimes there's a problem either on your end(most likely) or their end. So i have been playing this game for quite a while now and everyday i come across people having client side issue when connecting to their favorite servers or just to the game in general.So much so that i have been taken on as a Tech Support of sorts for a few servers. Well i have never had to uninstall or re install the game and i usually have found fixes that avoid a requirement for this.Allow it to reach the main menu and then shut it down. WHY Something in the path file of the DLC has caused it to launch incorrectly.More often that not it is launching your mod on the DLC when it should be launching on Arma 2 Operation Arrowhead and reading the DLC separately.