Installing Dynamics SL on Windows 10

When installing Dynamics SL client on windows 10 the client will not start.  the "this application could not be started" pops up.  a link in the error message is to 

https://support.microsoft.com/en-us/help/2715633/shim-errors-for-the-net-framework-version-and-platform-support

the Win 10 desktop is fully patched with .net 3.5 and 4.7 installed.  UAC is turned off.  the drive mapping to the network installation of the app & db was done with "net use /persistent".  Antivirus has been disabled.  

Additional observation - When attempting to run the install exe or the application from the mapped drive "as administrator" and error pops up  "the application cannot be found" and the full UNC path not the mapped drive is referenced in the error.   The application cannot be found if run as administrator over the mapped drive (either gui or on command prompt).

My support contractor is at a loss and we are hopeful for any suggestions.

thanks in advance