Access to wp-admin by IP

I have always used this bit of code

# Block access to wp-admin.
order deny,allow
allow from x.x.x.x
deny from all

in my .htaccess file to limit access to my wp-admin, but now I can’t reach my login page with this code in my .htaccess file. Has something changed with the newest version of WordPress? Before deleting that bit of code, I tried renaming my plugins folder to see if it was a plugin causing an issue, but that didn’t seem to help. Anyone have any thoughts? Thanks!

Gail