Thumbs.db: What It Is & How To Fix Errors

Thumbs.db is a file that is automatically generated by the Windows operating system to store thumbnail images of the files in a folder. These thumbnail images are used to provide a preview of the content of the files without having to open them. While Thumbs.db can be a useful feature, it can also cause errors and issues that can be frustrating for users. In this article, we will explore what Thumbs.db is, common errors associated with it, and how to fix these errors.

FIles Windows 11

What is Thumbs.db?

Thumbs.db is a hidden system file that is created by Windows in each folder that contains images or videos. It stores small thumbnail versions of the images or videos in that folder, allowing for quick and easy previewing of the content. These thumbnails are displayed when you view the folder in Windows Explorer or any other file manager.

Thumbs.db is created automatically by Windows and is not meant to be opened or modified by users. It is a database file that stores information about the images or videos in the folder, such as their location, size, and other metadata. This allows Windows to quickly generate and display the thumbnails without having to read and process the original files every time.

Common Errors with Thumbs.db

While Thumbs.db serves a useful purpose, it can sometimes cause errors and issues that can be frustrating for users. Some of the common errors associated with Thumbs.db include:

  1. Access Denied: This error occurs when Windows is unable to access or modify the Thumbs.db file. It can happen if the file is locked by another process or if the user does not have the necessary permissions to access the file.
  2. File In Use: This error occurs when a file that is referenced in the Thumbs.db file is currently in use by another program. Windows cannot update the Thumbs.db file until the file is no longer in use.
  3. Corrupted Thumbs.db: In some cases, the Thumbs.db file itself can become corrupted, leading to errors when trying to view or access the thumbnails.

How to Fix Thumbs.db Errors

Fixing Thumbs.db errors can be relatively simple, and there are a few methods you can try:

Method 1: Delete Thumbs.db

The easiest way to fix Thumbs.db errors is to delete the file. Since Thumbs.db is automatically generated by Windows, deleting it will not cause any issues. Windows will recreate the file when needed.

To delete Thumbs.db, follow these steps:

  1. Open Windows Explorer and navigate to the folder where the Thumbs.db file is located.
  2. Click on the “View” tab in the ribbon at the top of the window.
  3. In the “Show/hide” section, check the box next to “Hidden items” to show hidden files and folders.
  4. Locate the Thumbs.db file in the folder.
  5. Right-click on the Thumbs.db file and select “Delete” from the context menu.

After deleting the Thumbs.db file, you may need to refresh the folder or restart Windows Explorer for the changes to take effect.

Method 2: Disable Thumbnail Previews

If you frequently encounter Thumbs.db errors or simply prefer not to have thumbnail previews in your folders, you can disable the feature altogether. Disabling thumbnail previews will prevent Windows from creating Thumbs.db files in the folders.

To disable thumbnail previews, follow these steps:

  1. Open Windows Explorer and click on the “View” tab in the ribbon at the top of the window.
  2. In the “Show/hide” section, click on the “Options” button.
  3. In the “Folder Options” window, click on the “View” tab.
  4. Under the “Advanced settings” section, check the box next to “Always show icons, never thumbnails”.
  5. Click “Apply” and then “OK” to save the changes.

After disabling thumbnail previews, Windows will no longer generate Thumbs.db files in the folders.

Method 3: Scan for Viruses or Malware

In some cases, Thumbs.db errors can be caused by viruses or malware on your system. It is always a good idea to scan your computer for any potential threats using a reliable antivirus or antimalware software.

We recommend using Malwarebytes Free to scan your system for viruses and malware. Malwarebytes is a trusted and effective software that can help detect and remove any malicious programs that may be causing Thumbs.db errors.

Summary

Thumbs.db is a file generated by Windows to store thumbnail images of files in a folder. While it can be useful for quick previews, Thumbs.db can also cause errors and issues. Common errors include “Access Denied,” “File In Use,” and corrupted Thumbs.db files. To fix these errors, you can delete the Thumbs.db file, disable thumbnail previews, or scan for viruses and malware. By following these methods, you can resolve Thumbs.db errors and improve your overall Windows experience.

10 Rules to Avoid Online Scams

Here are 10 practical safety rules to help you avoid malware, online shopping scams, crypto scams, and other online fraud. Each tip includes a quick “if you already got hit” action.

  1. Stop and verify before you click, log in, download, or pay.

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    Most scams win by creating urgency. Verify using a trusted method: type the website address yourself, use the official app, or call a known number (not the one in the message).

    If you already clicked: close the page, do not enter passwords, and run a malware scan.

  2. Keep your operating system, browser, and apps updated.

    updates guide

    Updates patch security holes used by malware and malicious ads. Turn on automatic updates where possible.

    If you saw a scary “update now” pop-up: close it and update only through your device settings or the official app store.

  3. Use layered protection: antivirus plus an ad blocker.

    shield guide

    Antivirus helps block malware. An ad blocker reduces scam redirects, phishing pages, and malvertising.

    If your browser is acting weird: remove unknown extensions, reset the browser, then run a full scan.

  4. Install apps, software, and extensions only from official sources.

    install guide

    Avoid cracked software, “keygens,” and random downloads. During installs, choose Custom/Advanced and decline bundled offers you do not recognize.

    If you already installed something suspicious: uninstall it, restart, and scan again.

  5. Treat links and attachments as untrusted by default.

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    Phishing often impersonates delivery services, banks, and popular brands. If it is unexpected, do not open attachments or log in through the message.

    If you entered credentials: change the password immediately and enable 2FA.

  6. Shop safely: research the store, then pay with protection.

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    Be cautious with brand-new stores, “closing sale” stories, and prices that make no sense. Prefer credit cards or PayPal for dispute options. Avoid wire transfers, gift cards, and crypto payments.

    If you already paid: contact your card issuer or PayPal quickly to dispute the transaction.

  7. Crypto rule: never pay a “fee” to withdraw or recover money.

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    Common patterns include fake profits, then “tax,” “gas,” or “verification” fees. Another is a “recovery agent” who demands upfront crypto.

    If you already sent crypto: stop paying, save evidence (wallet addresses, TXIDs, chats), and report the scam to the platform used.

  8. Secure your accounts with unique passwords and 2FA (start with email).

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    Use a password manager and unique passwords for every account. Enable 2FA using an authenticator app when possible.

    If you suspect an account takeover: change passwords, sign out of all devices, and review recent logins and recovery settings.

  9. Back up important files and keep one backup offline.

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    Backups protect you from ransomware and device failure. Keep at least one backup on an external drive that is not always connected.

    If you suspect infection: do not connect backup drives until the system is clean.

  10. If you think you are a victim: stop losses, document evidence, and escalate fast.

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    Move quickly. Speed matters for disputes, account recovery, and limiting damage.

    • Stop payments and contact: do not send more money or respond to the scammer.
    • Call your bank or card issuer: block transactions, replace the card if needed, and start a dispute or chargeback.
    • Secure your email first: change the email password, enable 2FA, and remove unfamiliar recovery options.
    • Secure other accounts: change passwords, enable 2FA, and log out of all sessions.
    • Scan your device: remove suspicious apps or extensions, then run a full malware scan.
    • Save evidence: screenshots, emails, order pages, tracking pages, wallet addresses, TXIDs, and chat logs.
    • Report it: to the payment provider, marketplace, social platform, exchange, or wallet service involved.

These rules are intentionally simple. Most online losses happen when decisions are rushed. Slow down, verify independently, and use payment methods and account controls that give you recourse.