缩略图预览在帮助您识别(Thumbnail)图像和视频文件(image and video files)中的内容方面发挥着重要作用。但是，Windows 11 和Windows 10可能会因多种原因停止显示它们。操作系统(operating system)的旧版本也有同样的问题。
在大多数情况下，由于文件资源管理器(File Explorer)设置（之前称为Windows 资源管理器）配置不正确或(Windows Explorer)缩略图缓存(thumbnail cache)损坏，您会看到空白缩略图。但是，您很少遇到像恶意软件感染(malware infestation)这样严重的事情。
完成以下修复以尽快在Windows 11和 10 中显示所有缩略图。
注意：(Note:)根据设计，Windows 11 无法显示文件夹的缩略图预览。因此(Hence)，以下修复仅影响 Microsoft 最新操作系统(operating system)中的文件预览。
检查文件夹视图选项
您的第一步是检查Windows 11或Windows 10是否设置为在文件资源管理器(File Explorer)中显示缩略图预览。您可以通过“文件资源管理器选项”对话框(File Explorer Options dialog)执行此操作。
1. 选择任务栏上的搜索(Search )图标或框，(icon or box)然后键入(taskbar and type) 文件资源管理器选项(file explorer options)。
2. 选择打开(Open)。
3. 切换到查看(View )选项卡。
4. 取消选中始终显示图标，从不缩略图(Always show icons, never thumbnails)旁边的框。
5. 选择应用(Apply)，然后选择确定(OK)。
如果您必须在步骤 4(step 4)中激活该选项，文件资源管理器(File Explorer)应立即生成缩略图。如果您不必做任何事情，请继续进行其余的修复。
强制重启文件资源管理器
文件资源管理器也可能(File Explorer can also bug out)无缘无故地出错并停止正常运行(stop functioning correctly)。解决此问题的最快方法是使用任务管理器(Task Manager)重新启动它。
1. 按Shift + Ctrl + Esc打开任务管理器。
2. 选择更多详细信息(More details )（如果需要）以展开默认的任务管理器视图(Task Manager view)。
3. 在进程(Processes )选项卡下，找到并选择Windows Explorer。
4. 选择重新启动(Restart )按钮以重新启动文件资源管理器。
5. 退出任务管理器。
如果图像或视频文件(image or video files)（以及Windows 10中的文件夹）仍然显示为空白，请尝试重新启动操作系统(operating system)。
删除缩略图缓存
如果缩略图仍未显示，则您可能正在处理损坏的缩略图缓存(thumbnail cache)。删除它有助于文件资源管理(File Explorer)器从头开始重新生成预览。
1. 打开开始(Start )菜单并选择设置(Settings)。
2. 选择系统(System )>存储(Storage)。
3. 选择临时文件(Temporary Files)。
4. 选中缩略图(Thumbnails )旁边的框并选择删除文件。(Remove files.)
5. 重新启动您的计算机。
删除缩略图缓存(Delete Thumbnail Cache)（替代方法(Alternate Method)）
如果您无法通过Windows 11或Windows 10中的存储设置删除(Storage Settings)缩略图缓存(thumbnail cache)，请尝试使用涉及旧版磁盘清理应用程序(legacy Disk Cleanup app)的替代方法。
1. 按Windows + R打开运行(Run )框。
2.输入cleanmgr并选择OK。
3. 选中缩略图(Thumbnails)旁边的框。
4. 选择确定(OK)。
恢复文件资源管理器默认值
将文件资源管理器的“视图”(View)选项重新启动为默认值也可能会解决阻止Windows 11和 10 正确显示缩略图的问题。
1. 搜索并打开文件资源管理器选项(File Explorer Options)对话框。
2. 切换到查看(View )选项卡。
3. 选择恢复默认值( Restore Defaults)。
4. 选择应用(Apply)，然后选择确定(OK)。
恢复默认应用程序
问题是否仅限于特定的图像或视频格式(image or video format)？设置不同的默认程序(default program)可能会导致这种情况。尝试将其配置为在本机Microsoft 应用程序(Microsoft app)中打开。
1. 右键单击文件格式中的任何文件并指向(file format and point)打开方式(Open with)。
2. 选择选择另一个应用程序(Choose another app)。
3. 选择一个本地应用程序——例如，照片(Photos )（用于图像）或电影和电视(Movies & TV)（用于视频）。
4. 选中始终使用此应用打开文件(Always use this app to open files)旁边的框。
5. 选择确定(OK)。
安装相关编解码器
相反，与Windows中不受支持的格式相关的图像和视频文件(image and video files)可能不会显示缩略图预览。您可以尝试通过安装相关的编解码器来解决这个问题。
例如，iPhone 的默认HEIC 图像(HEIC image)格式不会在Windows上呈现缩略图，除非您安装HEI C Image Extensions。
另一方面，K-Lite Codec Pack可以帮助您处理不常见的视频格式。
更新图形驱动程序
过时的图形驱动程序会导致性能问题并阻止各种Windows功能（例如缩略图预览）正常工作。检查显卡制造商(video card manufacturer)的网站（例如NVIDIA或AMD）以获取更新的驱动程序版本(driver version)或使用免费的驱动程序更新工具来更新所有内容。
此外，最好检查Windows 更新(Windows Update)以获取任何 Microsoft 验证的显示驱动程序(display driver)更新。
1. 打开设置(Settings )应用程序。
2. 选择Windows 更新(Windows Update)。
3. 选择检查更新(Check for updates)。在Windows 更新(Windows Update)完成扫描更新后，选择高级选项(Advanced Options)。在 Windows 10 上，选择查看可选更新(View optional updates )并跳过下一步。
4. 选择可选更新(Optional updates)。
5. 选择任何与显示相关的驱动程序更新并选择下载并安装(Download & install)。
当您使用它时，我们还建议您应用适用于Windows本身的最新更新。它们通常包含针对系统相关功能的错误修复，并且可能有助于永久修复文件资源管理器(File Explorer)的问题。
运行 SFC 扫描
尝试使用系统文件检查器(System File Checker)运行扫描。它是一个命令行工具，可帮助解决Windows 11和 10 中可能存在的文件损坏问题。
1. 按Windows + X并选择Windows Terminal (Admin)或Windows PowerShell (Terminal)。
2. 键入以下命令：
sfc /scannow
3. 按回车(Enter)。
SFC扫描通常需要一段时间才能完成。如果它设法找到并修复问题，您可能希望通过运行DISM（部署映像服务和管理）工具(DISM (Deployment Image Servicing and Management) tool)继续。
运行反恶意软件扫描
如果不显示缩略图的问题继续存在或再次出现，您可能正在处理文件资源管理器劫持软件(File Explorer-hijacking software)。使用Windows 安全(Windows Security)中心对您的计算机执行恶意软件彻底扫描。
1. 搜索并打开Windows 安全(Windows Security)。
2. 选择病毒和威胁防护(Virus & threat protection)。
3. 向下滚动到病毒和威胁防护设置(Virus & threat protection settings)部分并安装任何待处理的反恶意软件定义(antimalware definition)更新。然后，向上滚动并选择扫描选项(Scan options)。
4. 选中Full scan(Full scan)旁边的单选按钮。
5. 选择立即扫描(Scan now)。
或者，您可以使用(use a dedicated malware remover)Malwarebytes等专用恶意软件清除程序来查找和删除危险形式的恶意软件(remove dangerous forms of malware)。
文件资源管理器再次显示缩略图预览(File Explorer Displaying Thumbnail Previews Again)
如果您使用图像和视频，那么缩略图预览是必不可少的。希望(Hopefully)上述解决方案有所帮助，并且文件资源管理器(File Explorer)已恢复正确显示它们。这是一个非常值得花时间修复的基本功能。如果问题再次出现(issue recurs)（而且很可能），只需执行上面的修复程序，你应该会没事的。
How to Fix Thumbnail Previews Not Showing in Windows 11/10 Explorer
Thumbnail previewѕ play an imрortant role in helping you identifу content within image and video files. However, Windоws 11 and Windоws 10 can stop displaying them for several reasons. Older іterations of the operating syѕtem have alѕo had thе same issue.
In most cases, you’ll see blank thumbnails due to incorrectly configured File Explorer settings (called Windows Explorer earlier) or a corrupt thumbnail cache. But rarely, you could be dealing with something as severe as a malware infestation.
Work through the fixes below to get all thumbnails showing in Windows 11 and 10 as soon as possible.
Note: By design, Windows 11 cannot display thumbnail previews for folders. Hence, the following fixes only impact file previews in Microsoft’s newest operating system.
Check Folder View Options
Your first course of action is to check if Windows 11 or Windows 10 is set up to display thumbnail previews in File Explorer. You can do that via the File Explorer Options dialog.
1. Select the Search icon or box on the taskbar and type file explorer options.
2. Select Open.
3. Switch to the View tab.
4. Uncheck the box next to Always show icons, never thumbnails.
5. Select Apply, then OK.
If you had to activate the option in step 4, File Explorer should generate thumbnails immediately. If you didn’t have to do anything, move on with the rest of the fixes.
Force-Restart File Explorer
File Explorer can also bug out for no reason and stop functioning correctly. The quickest way to fix that is to restart it using the Task Manager.
1. Press Shift + Ctrl + Esc to open the Task Manager.
2. Select More details (if needed) to expand the default Task Manager view.
3. Under the Processes tab, locate and select Windows Explorer.
4. Select the Restart button to restart File Explorer.
5. Exit the Task Manager.
If image or video files (and folders in Windows 10) still appear blank, try restarting the operating system instead.
Delete Thumbnail Cache
If the thumbnails are still not showing, the chances are you’re dealing with a corrupt thumbnail cache. Deleting it helps File Explorer regenerate previews from scratch.
1. Open the Start menu and select Settings.
2. Select System > Storage.
3. Select Temporary Files.
4. Check the box next to Thumbnails and select Remove files.
5. Restart your computer.
Delete Thumbnail Cache (Alternate Method)
If you have trouble deleting the thumbnail cache via the Storage Settings in Windows 11 or Windows 10, try this alternative method involving the legacy Disk Cleanup app instead.
1. Press Windows + R to open the Run box.
2. Type cleanmgr and select OK.
3. Check the box next to Thumbnails.
4. Select OK.
Restore File Explorer Defaults
Restarting File Explorer’s View options to their defaults might also fix issues preventing Windows 11 and 10 from displaying thumbnails correctly.
1. Search for and open the File Explorer Options dialog.
2. Switch to the View tab.
3. Select Restore Defaults.
4. Select Apply, then OK.
Revert Default Application
Is the issue limited to a specific image or video format? Setting up a different default program may cause that. Try configuring it to open in a native Microsoft app.
1. Right-click any file in the file format and point to Open with.
2. Select Choose another app.
3. Pick a native app– e.g., Photos (for images) or Movies & TV (for videos).
4. Check the box next to Always use this app to open files.
5. Select OK.
Install the Relevant Codecs
Conversely, image and video files related to non-supported formats in Windows may not display thumbnail previews. You can attempt to fix that by installing the relevant codecs.
For example, the iPhone’s default HEIC image format won’t render thumbnails on Windows unless you install HEIC Image Extensions.
On the other hand, the K-Lite Codec Pack can help you with uncommon video formats.
Update the Graphics Drivers
Outdated graphics drivers cause performance issues and prevent various Windows features (such as thumbnail previews) from working correctly. Check with the video card manufacturer’s website (such as NVIDIA or AMD) for a newer driver version or use a free driver updater tool to get everything up-to-date.
Additionally, it’s a great idea to check Windows Update for any Microsoft-verified display driver updates.
1. Open the Settings app.
2. Select Windows Update.
3. Select Check for updates. After Windows Update finishes scanning for updates, select Advanced Options. On Windows 10, select View optional updates instead and skip the next step.
4. Select Optional updates.
5. Pick any display-related driver updates and select Download & install.
While you’re at it, we also recommend applying the latest updates for Windows itself. They usually contain bug fixes for system-related features and just might help patch issues with File Explorer for good.
Run an SFC Scan
Try running a scan using the System File Checker. It’s a command-line tool that helps resolve possible file corruption issues in Windows 11 and 10.
1. Press Windows + X and select Windows Terminal (Admin) or Windows PowerShell (Terminal).
2. Type the following command:
sfc /scannow
3. Press Enter.
An SFC scan typically takes a while to complete. If it manages to find and fix issues, you might want to continue by running the DISM (Deployment Image Servicing and Management) tool.
Run Anti-Malware Scan
If the issue with non-displaying thumbnails continues or recurs, you might be dealing with File Explorer-hijacking software. Use Windows Security to perform a thorough scan of your computer for malware.
1. Search for and open Windows Security.
2. Select Virus & threat protection.
3. Scroll down to the Virus & threat protection settings section and install any pending antimalware definition updates. Then, scroll back up and select Scan options.
4. Check the radio button next to Full scan.
5. Select Scan now.
Alternatively, you can use a dedicated malware remover such as Malwarebytes to find and remove dangerous forms of malware.
File Explorer Displaying Thumbnail Previews Again
If you work with images and videos, then thumbnail previews are indispensable. Hopefully, the solutions above helped, and File Explorer is back to displaying them correctly. It’s an essential feature that’s well worth taking the time to fix. If the issue recurs (and it very well might), just run through the fixes above, and you should be fine.
