These folders are specific to Windows Server Essentials edition.
Unless you have very good reason to mess with these folders (and are willing to put up with the complaints of the Server Essentials Dashboard), you should leave these folders alone. If you must do anything, disable the share on the specific folder you don't intend to use, but do not delete the underlying folders. Should you later need the folder, it's much easier to re-share a folder than recreate it from scratch given the specific NTFS security permissions they invariably require.
As for the
CertEnroll folder, leave that alone, else you'll break your Certificate Services.
Disabling the shares assigned to the folder will prevent users from accessing them over the network. Anyone logging directly into the server can easily ignore the folders, as should be done with most all default folders provided in a clean OS installation.
Here's a description of the various folders you inquired about:
As @Katherine Villyard has correctly indicated, this folder is used by Active Directory Certificate Services for certificate enrollment.
Specifically, the TechNet article Changes implemented by Essentials Role on Windows Server 2012 R2 indicates this folder is configured in the IIS default website:
Web sites that are added and configured to the Internet Information Services (IIS) Manager console
Default Web Site
According to the TechNet article Manage User Accounts in Windows Server Essentials:
By default, the following server folders are created when you install Windows Server Essentials:
- Users. Used to store and access files by network users. A user-specific folder is automatically generated in the Users server folder for every network user account that you create.
According to TechNet article Use Shared Folders in Windows Server Essentials:
Windows Server Essentials provides a central location for all of your data and files through the shared folders that are located on your server.
There are several different ways that you can access your shared folders on Windows Server Essentials from a device that is connected to the server:
- Using the Windows Server Essentials Launchpad
- Using Remote Web Access
- Using My Server app for Windows Phone
- Using My Server app for Windows 8
\ServerFolders folder stores a variety of data: