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How to Clear Windows Thumbnail Cache in Windows 11

Richard
Written by
Richard
Jun 22, 2022 Updated Jul 14, 2026 3 min read
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Clearing the Windows 11 thumbnail cache fixes problems with file previews not showing up correctly.

The thumbnail cache is a special folder on your computer that saves small pictures of your files, like photos or document icons. This makes it faster to see what’s inside folders because Windows doesn’t have to create these previews every time.

Sometimes, this cache can get mixed up or “corrupted.” When that happens, you might see blank icons or the wrong pictures for your files. This can also make opening folders with lots of images slower.

By clearing out this old cache, you tell Windows to make a brand new one. This usually makes sure all your file icons look right again and folders open up quickly.

⚡ Quick Answer

Clear the Windows thumbnail cache using Disk Cleanup or the Command Prompt. Open File Explorer, right-click your C: drive, select Properties, then Disk Cleanup, and check Thumbnails. Alternatively, use Command Prompt commands to delete thumbcache_*.db files.

Is it safe to clear the thumbnail cache?

⚠️Warning
Yes, it is completely safe. Clearing the thumbnail cache does not delete your actual photos, videos, or documents. It only removes the temporary preview database files. Windows will automatically rebuild these previews the next time you open a folder containing those files.

How often should I clear the thumbnail cache?

You do not need to clear it regularly. Only perform this task if you notice your folder icons are blurry, missing, or showing incorrect previews. If you find yourself doing this often, it may indicate a deeper issue with your hard drive or system files.

Why this happens: Understanding Cache Corruption

Windows thumbnail cache can get corrupted because the preview files it stores can become mismatched or broken over time, especially as you add or delete files.

Method 1Using Disk Cleanup (Easiest Way)

You can easily clear your Windows 11 thumbnail cache using the built-in Disk Cleanup tool. This tool safely gets rid of those temporary preview files that can build up over time and sometimes cause problems with how your pictures and videos show up in File Explorer.

  1. Open File Explorer and click This PC.
  2. Right-click your Local Disk (C:) and select Properties.
  3. Click the Disk Cleanup button.
    Windows 11 thumbnail cache clearing process
    windows 11 clear reset cache thumbnail
  4. In the window that appears, check the box for Thumbnails.
    Disk Cleanup button in Windows 11 interface
    windows 11 disk cleanup button
  5. Click OK to delete the files.
    Clearing thumbnails database in Windows 11
    windows 11 thumbnails db clear

Method 2Automated Cleanup via Command Prompt

A faster way to clear the Windows 11 thumbnail cache is by using a simple Command Prompt command. This method automatically deletes the old preview files, which helps free up disk space and can fix display issues with thumbnails.

⚠️Warning
You must stop the Windows Explorer process first to unlock the files.
Command Prompt
del /f /s /q %LocalAppData%\Microsoft\Windows\Explorer\thumbcache_*.db

After running these commands, your desktop will disappear briefly. This is normal. Your icons will reappear once the cache is rebuilt.

Troubleshooting: Thumbnails Still Not Working?

If clearing the cache does not fix the issue, check your Folder Options:

  • Open File Explorer.
  • Click the three dots (…) at the top and select Options.
  • Go to the View tab.
  • Ensure the box Always show icons, never thumbnails is unchecked.
  • Click Apply and OK.

Summary

Clearing the Windows 11 thumbnail cache fixes broken icons by removing old preview files, which Windows then rebuilds automatically using safe methods like Disk Cleanup or Command Prompt.

Will clearing the cache delete my actual image files?

No, clearing the thumbnail cache will not delete your actual image files. It only removes the small, temporary preview images that Windows generates to speed up folder browsing. Your original photos, videos, and documents remain completely untouched and safe on your hard drive.

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Tags: #Windows 11
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Richard

About the Author

Richard

Tech Writer, IT Professional

Richard, a writer for Geek Rewind, is a tech enthusiast who loves breaking down complex IT topics into simple, easy-to-understand ideas. With years of hands-on experience in system administration and enterprise IT operations, he’s developed a knack for offering practical tips and solutions. Richard aims to make technology more accessible and actionable. He's deeply committed to the Geek Rewind community, always ready to answer questions and engage in discussions.

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