Challenge 2: A Black Screen From Window Capture on an Anti-Cheat Game — Solution Walkthrough

What's actually happening:

Per this chapter's own warning box, this is a well-known, specific
compatibility issue — certain games with anti-cheat or overlay
protections deliberately block the kind of window capture Window
Capture relies on, which is exactly why the game appears as a solid
black rectangle rather than its actual visible content. This is not a
general OBS malfunction; it's a known, specific incompatibility
between Window Capture and this particular category of game
protection.

Why this isn't a sign OBS itself is broken:

If OBS were genuinely malfunctioning, other Sources (webcam, other
application windows) would likely show similar problems too. The fact
that this issue is specific to one game with known anti-cheat
protection, rather than a general OBS-wide failure, is exactly the
pattern this chapter's own warning box describes.

The recommended fix:

Switch that specific game over to Game Capture instead of Window
Capture — per this chapter's own material, Game Capture is a
specialized mode built specifically for games, offering meaningfully
better compatibility with exactly this kind of game that resists
plain Window Capture.

WHY THIS WORKS AS AN ANSWER
------------------------------
This exercise directly applies this chapter's own warning box to the
precise scenario it was written to address, correctly identifying the
cause as a known compatibility limitation rather than a general OBS
bug, and recommending the specific fix (Game Capture) this chapter
introduces.