Cannot Add VPN to Windows Server 2012 R2

Hello, I'm trying to add VPN to a Windows Server 2012 R2.  I followed the steps outlined at the Microsoft page:

---------------------------------------

In the Initial Configuration Tasks window, under Customize This Server, click Add roles. By default, Initial Configuration Tasks starts automatically when you log on.

Open Server Manager by clicking Start, Administrative Tools, and then click Server Manager. Then, under Roles Summary, click Add roles.

In the Add Roles Wizard, do the following:
Click Next or click Select Server Roles.

In the list of server roles, select Network Policy and Access Services. Click Next twice.

In the list of role services, select Routing and Remote Access Services to select all the role services for Routing and Remote Access Services. You can also select individual server roles.

Proceed through the steps in the Add Roles Wizard to complete the installation.

---------------------------------------

The installation fails to complete.  The error message is:  "The request to add or remove features on the specified server failed The operation cannot be completed"

I searched this site, and found hints to remove registry entries to removing pending reboots. None of those existed.  I even tried this:  Dism /Online /Cleanup-Image /RestoreHealth, which did not solve the problem.

Any help on this is greatly appreciated.

Thanks,

-Ted