Windows Temporary Files <Limited — 2025>

| File Type | Description | Safe to Delete? | | :--- | :--- | :--- | | | Old versions of Windows update files used for uninstalling updates. | Yes , but you cannot roll back updates afterward. | | Thumbnails Cache | Stores previews of images/videos so folders load faster. | Yes , Windows will rebuild them automatically. | | Delivery Optimization Files | Partial downloads used for sharing Windows updates across local networks. | Yes. | | Temporary Internet Files | Browser cache (images, CSS, scripts). | Yes , though it may slow down web browsing initially. | | Windows Error Reports | Memory dumps generated during "Blue Screen of Death" (BSOD) crashes. | Yes , unless you are currently troubleshooting a crash. | | App Cache | Cache created by apps (Spotify, Steam, Adobe). | Yes , but the app may take longer to launch next time. |

Restart the computer. Some applications rely on session data stored in temp files. A restart usually refreshes these files automatically. If not, reinstalling the specific application usually fixes the issue.

Ignoring your temp folder is like never taking out the trash. Eventually, you can’t walk through the kitchen. windows temporary files

Windows 10 and 11 have an automatic cleaner called Storage Sense.

You may have run Disk Cleanup and noticed a massive folder called WinSxS (Windows Side-by-Side). This folder looks like a temporary folder, but | File Type | Description | Safe to Delete

I have seen %temp% folders balloon to over 40GB. On a 256GB laptop with a modern game installed? That is a crisis.

Let’s demystify the world of Windows temporary files. By the end of this guide, you’ll not only know exactly what these files are, but you’ll also master how to clean them up to reclaim gigabytes of storage and potentially speed up your PC. | | Thumbnails Cache | Stores previews of

This is where Windows system processes and services store their temporary data.