How to Fix GOG Galaxy Low Disk Space Error on Windows: Expert Step-by-Step Guide

As a long-time PC gamer and GOG Galaxy user, I've troubleshooted countless installation issues. When the GOG Galaxy Launcher shows an Insufficient disk space error, the go-to fix is often moving games to another drive. But getting it right matters—follow this proven guide for seamless results.

Resolve GOG Galaxy Low Disk Space Error

PC game installs frequently fail due to low space on your main drive. Free up room or redirect temporary folders to another drive. Here's the exact process:

1. Open the GOG GALAXY Settings panel.
2. Go to the Install, Update tab.
3. Select a different downloads folder.
4. Click the drop-down button.
5. Choose Custom Folder.
6. Repeat for the temporary game update folder.

You can't install if your C: drive lacks enough space—typically 35GB or more for larger titles.

During installation via GOG GALAXY, files first download to this temp folder:

C:\Program Files (x86)\GalaxyClient\Games\!Downloads\temp

To fix low disk space errors during downloads, either clear space on C: or change the Other Downloads folder.

Access Settings by clicking the gear icon in the top-left corner and selecting Settings.

Navigate to the Installation, update tab under GOG.GAMES. Edit these:

• Temporary game update folder – Temp directory for game installs and updates.
• Other Downloads Folder – For backup installers and bonus content.

Click the drop-down next to each and select Custom Folder.

Is GOG Galaxy Legal?

Absolutely. GOG offers legally licensed games as a retailer or by acquiring rights (often classics). Owned by CD Projekt Red—the Warsaw-based developers behind The Witcher and Cyberpunk 2077—it's a trusted platform.

Is GOG Galaxy Safe?

Yes, GOG Galaxy is safe and legitimate. It provides the latest PC titles alongside a vast library of classics from the 1990s. Millions of gamers rely on it daily.