Can’t figure out why this would be happening- wp install issue or .htaccess issue?
I am using a theme but the same problem occurs with the default wp themes. After I create a new page (example: about), I get a 404 when I try to access it from the navigation or when I just enter the URL: domain.com/dev/about, I am also getting 404.
WP installed in httpdocs/dev.
All plugins are deactivated. Everything else appears to be working correctly.
WordPress is not receiving requests, check if mod_rewrite is enabled and an .htaccess file is being generated by WordPress (assuming you are using Apache, not IIS).
See using pretty permalinks and fixing permalink problems for more info.