I have a wordpress site running on http://abc.com
I want to move the site to abc.com/wp
So I installed wordpress on abc.com/wp. I used UpdraftPlus to backup everything from the old install and restore them onto the new install. On the new install, I changed admin->general-> both site addresses to point to abc.com/wp, so that I can do a quick sanity check before making it live. After that I could not go back to the new install's wordpress admin via abc.com/wp/wp-admin. After I enter user name and password, it will just pause for a few second and nothing will come up. Any ideas what is going on?