Thumbnail Preview Off in Windows? 🤔🚫 If your thumbnail previews are not showing in Windows, it might be due to system settings or cache issues. Instead of image or video previews, you may see only generic icons. 🔍 Possible Reasons & Fixes: ✅ File Explorer Settings: Enable thumbnail previews in Folder Options > View by unchecking "Always show icons, never thumbnails." ♻ Clear Thumbnail Cache: Use Disk Cleanup to remove cached thumbnails. 🛠 Performance Settings: Go to System Properties > Advan