Steven K: Thanks for the reply. I have since solved my problem. I had transferred the files (TaxAct) via USB and, as you noted, the DLL file did not follow. I downloaded the SW again from TaxAct and the .DLL magically appeared. All is well.
I transferred a tax prep software App from an old Win 10 computer to a new Dell. Now I can't open the tax prep SW. I receive an error message "can't find dynapdf.dll". Looked in System32 and couldn't find dynapdf.dll. Options?