Turn off the display of thumbnails and only display icons on network folders
Supported on: At least Windows Vista
Registry
Software\Microsoft\Windows\CurrentVersion\Policies\Explorer Value name: DisableThumbnailsOnNetworkFolders
Enabled: DisableThumbnailsOnNetworkFolders = 1
Disabled: DisableThumbnailsOnNetworkFolders = 0
Description
This policy setting allows you to configure how File Explorer displays thumbnail images or icons on network folders. File Explorer displays only icons and never displays thumbnail images on network folders by default. If you disable this policy setting, File Explorer displays thumbnail images on network folders. If you enable or do not configure this policy setting, File Explorer displays only icons and never displays thumbnail images on network folders. Note: Allowing the use of thumbnail images from network folders can expose the users' computers to security risks.