How to Free Up Storage Space on Windows 11 in 2026 (Easy Step-by-Step Guide)

That dreaded “Low Disk Space” warning has appeared again. Your C: drive is nearly full, your PC is slowing down, and you’re not sure what’s eating up all your storage. This is one of the most common Windows 11 problems in 2026 — and the solution doesn’t require deleting things you care about.

With the right tools and a bit of know-how, you can recover gigabytes of storage in less than 30 minutes. Here’s exactly how to do it.

## Why Your Drive Keeps Filling Up

Windows 11 quietly accumulates junk over time — update backups, temporary files, hibernation data, system restore points, deleted files in the Recycle Bin, and cache from apps like browsers and the Microsoft Store. None of these are useful for your day-to-day work, but together they can eat 15–40GB of your storage without you ever noticing.

## Step 1: Run Storage Sense for Instant Cleanup

Windows 11 has a powerful built-in cleanup tool called Storage Sense. Go to **Settings > System > Storage > Storage Sense** and click **Run Storage Sense Now**. Make sure all the cleanup options are checked, including cleaning up temporary files, emptying the Recycle Bin automatically, and removing files from your Downloads folder that haven’t been used in a while.

Storage Sense can often free up 5–15GB on its own, and you can set it to run automatically on a schedule so your drive never fills up again.

## Step 2: Delete Windows Update Cleanup Files

After major Windows updates, Windows keeps a backup of the old system files in case something goes wrong. These backups can take up 5–20GB. Once you’ve confirmed your new version of Windows is working fine, you can safely delete them.

Search for **Disk Cleanup** in the Start menu, select your C: drive, and click **Clean up system files**. Check the box for **Windows Update Cleanup** and **Previous Windows Installation(s)** if they appear. These are safe to delete and can recover a significant amount of space. If Windows Update itself has been giving you trouble, also read our guide on fixing stuck or failing Windows 11 updates.

## Step 3: Find and Remove Large Files You’ve Forgotten About

Over months and years, large files accumulate in unexpected places — old game downloads, video recordings, installer files, and ISO images. You need a way to visualize what’s taking up space.

Go to **Settings > System > Storage** and click on different categories to see breakdowns. You can also use a free tool called **WinDirStat** or **TreeSize Free** — both show a visual map of your entire drive so you can instantly spot folders and files that are much larger than they should be. Many users find folders full of old game installers, forgotten video files, or duplicate downloads taking up tens of gigabytes.

## Step 4: Move Photos and Videos to External Storage or the Cloud

Photos and videos are almost always the biggest storage consumers on a personal PC. If you have years of family photos, vacation videos, or recorded gameplay on your C: drive, moving them off is the single most impactful thing you can do.

Use an external hard drive (1TB drives cost well under $50 now) or cloud storage like **OneDrive** (built into Windows 11), Google Photos, or iCloud. OneDrive’s **Files On-Demand** feature lets you access your cloud files as if they were on your PC without actually storing them locally — a brilliant way to have your files available without using local storage.

## Step 5: Uninstall Apps You Don’t Use

Go to **Settings > Apps > Installed Apps** and sort by Size. You’ll often find apps you installed years ago and completely forgot about — old games, software trials, bloatware from the manufacturer — taking up 5–20GB each.

Be systematic: if you haven’t opened it in 6 months and you can redownload it if needed, uninstall it. Games especially can be huge — uninstall ones you’ve finished and reinstall them only if you plan to replay them.

## Step 6: Clear Browser Cache and App Caches

Your browser stores gigabytes of cached images, cookies, and temporary data over time. In Chrome, go to Settings > Privacy and Security > Clear Browsing Data, select “All Time,” check Cached images and files, and clear. Edge, Firefox, and Opera have the same option.

App caches can also grow large. Check **C:Users[YourName]AppDataLocalTemp** and delete all files in that folder. You can also clear the Microsoft Store cache by searching “WSReset” in the Start menu and running it — this clears the Store’s cache without affecting your installed apps.

## Step 7: Disable or Reduce Hibernation File Size

Windows 11 uses a hibernation file (hiberfil.sys) stored on your C: drive that can be as large as your total RAM. If you have 16GB of RAM, that’s 16GB consumed by a file you might never use.

If you don’t use hibernate mode (most desktop users don’t), open Command Prompt as Admin and run:
“`
powercfg /hibernate off
“`
This deletes the hibernation file and frees up that space immediately. You can re-enable it anytime with `powercfg /hibernate on`.

A full storage drive is one of the biggest causes of a sluggish PC. After freeing up space, if your PC still feels slow, read our guide on why Windows 11 feels slow in 2026 and how to fix it. And if you’re experiencing random freezes alongside low storage, check out our Windows 11 freezing fix guide.

## The Bottom Line

Running out of storage on Windows 11 in 2026 is entirely manageable. Between Storage Sense, Disk Cleanup, clearing caches, removing large forgotten files, and moving media to the cloud or external storage, most users can recover 20–50GB without deleting a single file they actually care about. Make it a habit to run Storage Sense monthly and your drive will stay healthy all year.