How to Fix Black Ops 4 Black Screen

The infinite loop of "Scan & Repair" is one of the most common issues that players face with their Call of Duty: Warzone, Black Ops Cold War and Vanguard games when launching via the Battle.Net launcher. Now it has once again returned for Vanguard players right after the game's launch.

You have probably come across a random game crash with the following "Fatal Error" message.

You would have pressed the "Scan and Repair" option from this Fatal Error (like any normal person would do), which leads to an unlimited loop of "Scan & Repair" in your Battle.Net launcher, not allowing you to enter the game. You then might be shown yet another error with the code BLZBNTAG00000BB8 (the code might differ slightly depending on which game it is happening for you).

Normally, you would press the "Scan & Repair" option by clicking on the gear icon next to your launcher's "Play" button. But, at this point, even it won't work.

Blizzard Customer Support suggests deleting the .IDX files in the data folder of your game directory. However, you've likely arrived here because that solution doesn't always work.

The easiest, yet most unpopular, method to solve the "Scan & Repair" loop is to simply re-install the game. However, installing 200+ GB of game files is not something anyone wants to do if it can be at all avoided. In this guide, we show you exactly how to fix the problem without re-installing your game. In the guide we do it for Black Ops Cold War as an example, but the method also works for Warzone, Vanguard and other Blizzard games associated with the Battle.Net launcher.

Step 1: First, go to your game directory. The easiest way to do this is by clicking on the gear icon next to your 'Play' button and selecting the 'Show in Explorer' option. It will directly open up the game directory. Note that you will be one folder outside the main directory. Click on the folder with the same name as your game you're trying to fix.
Step 2: Delete all the files in the directory except the 'Data' folder. Don't worry, you won't have to install the complete game again as we are keeping the 'Data' folder to avoid re-installing the complete game. Select everything except the 'Data' folder and delete.
Step 3: Next, you must delete all the .idx extension files from the 'data' directory. Open the 'Data' folder and inside you will find another 'data' folder with a lower-case 'd.'

Sort the files by pressing the 'Type' column, and the .idx files will come on top. Delete all the .idx files that you see in this 'data' folder.

You can also search for ".idx" using the search bar at the top right corner of your windows explorer. It will show you all the .idx files that you need to delete.
Step 4: Once again go to the 'data' folder inside the parent 'Data' folder and sort the files in ascending order. This way, the files will be sorted from smallest to largest size files. Then, delete everything that is smaller than 2 MB. Do not delete anything above 2 MB.
Step 5: Restart your Battle.Net launcher, and your game should automatically start scanning and repairing. This time, it will not stop in the middle and won't show any error messages. It will go on to complete, and you will be able to see the "Play" button instead of the "Scan & Repair" button.