Hi Emil,

Thank you for your feature request about a built-in LastModified column in the RadFileExplorer! As a small token of gratitude for requesting this useful feature, I have updated your Telerik points.

While this request is under evaluation and will depend on community votes, I would like to share that you can already display a Last Modified column in the default RadFileExplorer without creating a full custom handler. Instead, you can extend the built-in functionality by using a custom column provider and adding a custom column to the embedded grid. 

You can find a step-by-step example here:

• https://www.telerik.com/products/aspnet-ajax/documentation/knowledge-base/fileexplorer-how-to-show-thumbnail-previews-in-radgrid-embedded-in-radfileexplorer

Regards,
Rumen
Progress Telerik