I have a suite that was developed on Windows/IIS, the final host is Linux /Apache. After moving i was unable to directly access the admin
typing in http://www.site.com/wp-admin/ results in a blank page
typing in wp-login.php will give me the login form
completing the login form and submitting results in a blank page, but if I enter a valid admin page i will be logged in.
if i submit forms in the admin i get blank pages but quick edits will work