Success at last! I followed your instructions to the letter and made the upgrade using the W10 1909 installation media stick. It worked like a charm, and I now have Windows 19 version 1909 installed. Windows is now updating some of the other software components to make everything current. I really want to thank you from coming to my aid. I have a fairly good knowledge of computer issues, but this had me stymied. I am glad that there are people like you who are willing to lend a hand to folks like me. John