Won’t Start/Launch (Critical Error Build ut2004) problem occurs in Killing floor when its game files are corrupted. In this post, you’ll learn how to fix this critical error quickly.
Fix 1: Verify Killing floor game files
Please follow the steps below to verify:
- Open Steam.
- Go to your library.
- Right-click on Killing floor.
- Go to Properties and then choose Local Files.
- Click on “Verify the integrity of game files” and wait for Steam client to verify game files.
- Launch Killing floor.
You will not see “Critical Error Build ut2004” after these steps.