Try downloading and installing DX4WIN 8.05 from http://www.dx4win.com - it will install into its own directory. You can't save QSOs without a license, but see if it works better in your situation. Others are having no problems with Windows 10. 73 - Jim AD1C -- Jim Reisert AD1C, <jjreisert at alum.mit.edu>, http://www.ad1c.us