I am using window.open(href = "folder1//folder2//file.html"); in each of two pages (one is index.html). The requested page shows from the index page but I get a 404 for the same request from another page. Tried many a reworded search but nothing specific to this. Thank you for any help that can be given. I have been using css, html, and js for about a bit over 3 years and am self-taught with many of my learning situations explained on Stack Overflow but this one is a bit of a black box.