The Spacebar preview feature on a Mac allows users to quickly preview files, documents, or media without fully opening them. By pressing the Spacebar, a preview window should appear, displaying a preview of the selected item.
However, there may be instances where the Spacebar preview is not functioning as expected on your Mac. If you’re encountering issues with the Spacebar preview not working, it can be frustrating and hinder your productivity. In this guide, we will explore potential reasons behind the problem and provide troubleshooting steps to help you resolve it.
By following these steps, you can potentially restore the functionality of the Spacebar preview on your Mac and enjoy the convenience it offers for quick file previews.
How to Fix Mac Spacebar Preview If Not Working?

If you’re experiencing issues with the Spacebar preview not working on your Mac, here are some troubleshooting steps you can try:
1. Check the file type: Ensure that the file you’re trying to preview is compatible with the Spacebar preview feature. The Spacebar preview typically supports a wide range of file types, including images, PDFs, videos, and documents. However, certain file types may not be compatible, or you may need to install additional software or plugins to enable their preview.
2. Restart Finder: The Spacebar preview feature is facilitated by the Finder application on your Mac. Restarting Finder can often resolve issues related to preview functionality. To do this, click on the Apple menu in the top-left corner of your screen, select “Force Quit,” choose “Finder,” and click the “Relaunch” button.
3. Update macOS: Make sure your macOS is up to date with the latest software updates. Apple frequently releases updates that address known issues and improve system performance. To check for updates, click on the Apple menu, select “System Preferences,” and choose “Software Update.” If updates are available, follow the on-screen instructions to install them.
4. Reset Finder preferences: Resetting the Finder preferences can sometimes fix issues with the Spacebar preview. To do this, navigate to the “~/Library/Preferences” folder (you can access it by holding down the Option key and clicking on the “Go” menu in the Finder), locate the file named “com.apple.finder.plist,” and move it to the Trash. Then, restart your Mac and check if the Spacebar preview is functioning correctly.
5. Clear Quick Look cache: Quick Look is the underlying technology that powers the Spacebar preview feature. Clearing the Quick Look cache can help resolve issues related to preview functionality. Open the Finder, press Shift+Command+G, enter “~/Library/Caches” in the dialog box, locate the folder named “com.apple.quicklook.ui.helper,” and delete it. Restart your Mac and test the preview again.
6. Check third-party extensions: If you have third-party extensions or plugins installed on your Mac, they might interfere with the Spacebar preview feature. Disable or uninstall any recently added extensions or plugins, and then test the preview functionality again.
7. Create a new user account: Creating a new user account can help determine if the issue is specific to your user profile. Create a new user account in the “Users & Groups” section of System Preferences and log in to the new account. Check if the Spacebar preview works correctly in the new account. If it does, there may be an issue with your original user account settings that needs further investigation.
If none of the above steps resolve the issue, it’s recommended to contact Apple Support or visit an Apple Authorized Service Provider for further assistance. They can provide additional guidance and help identify any underlying hardware or software issues that may be affecting the Spacebar preview feature on your Mac.
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