[stunnel-users] Windows 10 Pro - StartService: error 1053

I'm installing stunnel for a second time. I'm using it for Blue Iris on a Windows 10 Pro machine. I'm using stunnel 5.67 on Win64. GUI shows "Configuration successful". I've tried uninstalling and reinstalling numerous times.

When I run stunnel Service Start I receive a dialog box that says:

stunnel 5.67 on Win64 (not configured) StartService: error 1053: The service did not respond to the start or control request in a timely fashion

Can anyone help?