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Almaiw's avatar
Almaiw
Iron Contributor
Jun 18, 2026

The C drive of the computer is always running out of space

Ugh, my C drive is always full and I have no idea why, I keep getting those annoying low space warnings and I'm tired of deleting things only to see it fill up again. Does anyone know how I can find out what's eating up all my space and safely clean it out for good?

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1 Reply

  • Jamony's avatar
    Jamony
    MCT
    Jul 06, 2026

    Hi, the best first step is to see what is actually growing instead of deleting random files. Use Settings > System > Storage, then run TreeSize or WinDirStat as administrator for a clearer view. Common causes are OneDrive offline files, Windows.old, Delivery Optimization cache, restore points, hibernation, temp folders, and large app caches.