What to do when you are stuck into a WordPress update
Ever used the WordPress automatic upgrade tool and got stuck in maintenance with a message saying “Briefly unavailable for scheduled maintenance. Check back in a minute.“?
If it happened to you, don’t worry, it’s not too bad. When upgrading, WordPress creates a .maintenance file at the root of your WordPress install. If the message sticks, just manually delete that file through FTP and you should be good.
Once you deleted the file, check your blog to see if you must redo the upgrade.