Once you complete the steps, files will appear as icons without previews. Under the 'Advanced settings' section, check the Always show icons, never thumbnails option. On Windows 10, the easiest way to disable or enable thumbnail previews for files is to use the File Explorer settings. How to enable or disable thumbnails using File Explorer How to enable or disable thumbnails using Group Policy.How to enable or disable thumbnails using Settings.How to enable or disable thumbnails using File Explorer.In this Windows 10 guide, we'll walk you through the steps to disable (and enable) thumbnails for files in File Explorer. VPN Deals: Lifetime license for $16, monthly plans at $1 & more