FolderTimeUpdate is a simple tool for Windows that scans all files and folders under the base folder you choose, and updates the 'Modified Time' of every folder according the latest modified time of the files stored in it. 

This tool might be useful if, for example, you backup a cluster of folders and then restore them into another disk, but the backup program doesn't restore the original modified time of the folders.

FolderTimeUpdate doesn't require any installation process or additional dll files. In order to start using it, simply run the executable file - FolderTimeUpdate.exe

After running FolderTimeUpdate, you can choose the desired base folder and the other options and then click the 'Start' button to start updating the modified time of all folders. 

If you're not totally sure that the 'Modified Time' change is right for you, you can choose the 'Simulation Mode' option. When 'Simulation Mode' is on, FolderTimeUpdate will only display the changes of the modified time that will be made for all folders, but without actually applying these changes.