This article is specifically for Windows desktop users. If you are a Windows user, then you can unshare a folder using 'Dropbox Desktop Application'. To unshare a Dropbox shared photo folder from Desktop, you need to download and install 'Dropbox Desktop Application' on your Windows computer. Browse and right-click the shared photo folder. Select 'Shared folder settings...'. A pop up window opens up. Choose 'Unshare folder' option from the 'More Actions' menu. This is how you can unshare a Dropbox shared photo folder from desktop.