Webaccess installation asks for c:\inetpub\wwwroot, and it cannot be changed to different drive letter

Webaccess Application installation does not allow one to change the path to the webserver's root directory, if the webserver selected is Microsoft Internet Information Server (IIS) for Windows.  If c:\inetpub\wwwroot does not exist, the installation will not complete.

Even though the default path to the webserver's root directory may be d:\inetpub\wwwroot, Webaccess does not write to the directory.  For a temporary workaround, create a c:\inetpub\wwwroot directory, let the installation complete, then remove the temporary c:\inetpub\wwwroot directory, as it is empty.