GameCleaner · Guides

"Steam: Not Enough Disk Space" — How to Fix It

Updated June 2026 · 5 min read

Steam throws "not enough disk space" when the target drive can't fit the install or update — and sometimes even when it looks like you have room. Work through these six fixes, fastest first.

1. Clear Steam's download cache

A corrupt download cache fakes this error even with free space. Fix: Steam → Settings → Downloads → Clear Download Cache. You'll re-log in; nothing is lost.

2. Free real space — clear shader caches

Shader caches quietly grow to many GB. They're safe to delete (Steam rebuilds them). See what shader cache is and how to clear it →, or let GameCleaner clear them in one click.

3. Uninstall games you don't play

A few abandoned 100GB titles are usually the real culprit. The trick is finding them — Steam doesn't rank by last-played. GameCleaner scans your library, flags the stale giants, and backs up saves before removing anything. Download it free →

4. Install or move to another drive

If one drive is full, point Steam at another: Settings → Storage → Add Drive, then install or move games there. Full walkthrough: move Steam games to another drive →.

5. Verify there's truly enough room

An update needs space for the new files and a temporary copy of the old ones — often roughly double the patch size. If you're close to full, free a little extra and retry.

6. Disk full of other clutter?

If non-Steam files fill the drive, the fix is more storage. A 2TB NVMe is cheap in 2026 and ends the constant juggling.

GameCleaner shows exactly how much you can reclaim before you spend on storage — and clears it in a click, saves backed up first. Get it free → · See also: 7 ways to free up Steam space →