Expression Web 4 has worked great with Windows 10 (32 and 64 bit) through the 1607 version. When I upgraded to version 1703, most of Expression Web 4 still works, but when I try to add a hyperlink and click on the browse within the add link window, EW4 crashes. I can copy and paste a link and it works fine, but the browse crashes EW4. This has repeated on both a 32 bit and 64 bit installation. When I rolled the 64 bit computer back to version 1607, EW4 now works fine. I guess I will stay with 1607 for now unless someone has found a fix.