Here is a summary of what hacks are needed on Windows 10 to get the
efficient WinXP free public VPN use model to work on Win10 when you have
hundreds of sometimes unreliable freely available OpenVPN text files from
various public servers on the net.

HACK 1: Clicking on *.ovpn files opens them in the OpenVPN Daemon.
HACK 2: Turn off the nag screen that pops up every time an *ovpn is opened.
HACK 3: Set OpenVPN Daemon running-log files to open up in the same spot.
HACK 4: Add a 32-bit registry DWORD to open more than 15 files at a time.

1. Set the Windows 10 file association for *.ovpn
- Change from: *.ovpn starts with the OpenVPN GUI
- Change to: *.ovpn starts with the OpenVPN Daemon

2. Set the executable permissions for OpenVPN/bin/*.exe
- Right click on each of the *exe files in .\openvpn\bin\*.exe
- Set to: Run as administrator
- NOTE: You may only need to do this for one *exe in the bin directory
(but I wasn't sure which one because the OpenVPN Daemon (openvpn.exe)
also runs the OpenVPN Service (openvpnserv.exe) but there are other
executables in that bin directory (openssl.exe, openvpn-gui.exe,
& openvpnserv2.exe)

3. Set OpenVPN Daemon running logs to open up in the same spot!
- Doubleclick on an *.ovpn file to open up the OpenVPN Daemon log
- Right click in the top bar of that running log file
- Select "Properties" & go to the "Layout" tab
- Position the window as you want all of the windows to appear
- Uncheck the checkbox for "[ ]Let system position window"
- Press OK

4. Add a 32-bit DWORD to open more than 15 files at a time.
- HKCU\Software\Microsoft\Windows\CurrentVersion\Exp lorer
- Name : MultipleInvokePromptMinimum
- Type : DWORD
- Default : 15 (decimal)
- Change to: 200 (decimal)

The use model is to simply select any number of freely available OpenVPN
*.ovpn text files downloaded off the net, right click on the selected set,
and hit "Open" from the pop-up menu, where only one will work. That puts
you on VPN. Any files that work after the first will just die, and any
files that fail will remain in a hung window. Close the hung windows by
clicking on the [x] box, all of which are lined up. (Don't close the one
window that is working, of course. Just move it to the side when you
encounter it in the stack.)