Viking Embroidery Software

I originally posted an inquiry about the compatibility of Windows 10 to my 4D Embroidery Extra software. Thank you for responses from other sewers who were either as frustrated as I was, or had other suggestions. Yesterday, with the help of a wonderful friend, who owned the Pfaff store in Butte, MT, I upgraded to Windows 10 after downloading new hasp drivers for my 4D Emb Extra. I've now spent about four hours using 4D software, which is running well with Windows 10. I don't know if this will help anyone else, but here's what I did. On Pfaff.com, under the Software tab, I scrolled down to a category called Other Useful Software and selected Hasp Driver download. I saved and then ran that download, then made sure my 4D Emb Extra was still working and verified that I could uninstall Windows 10 if I wasn't satisfied. Then I upgraded to Windows 10. That upgrade takes a while, but the steps provided on Microsoft's site, were easy to follow. When the upgrade was complete, I inserted the hasp/dongle, and opened 4D Emb Extra. My first attempt didn't work, but I tried it again immediately and it did work. I've successfully opened it and used it multiple times since that first attempt.