Thread:Project:Support desk/v1.20.2 installation problem - 404 cannot be more descriptive in title/reply (2)

$wgUsePathInfo is not set in any way in LocalSettings.php. But since you mentioned it, I grepped for it over the entire installation and found the discussion in ./HISTORY. With $wgUsePathInfo = true; in LocalSettings.php, the problem is fixed (auto-detection is probably off). You are a real charm!