wp cron 401
# Exclude the WP CRON and other scripts from authentication
# Just put this into your .htaccess file
<FilesMatch "(wp-cron.php|another-script.php)$">
Satisfy Any
Order allow,deny
Allow from all
Deny from none
</FilesMatch>
# Just add above code to your .htaccess
# reason of wp cron 401 & 404
"
For what it's worth, I was running into the issue of the same message
within WP-Cron Events but instead with a 404 (not found) code...it's
hunting for the file http://yourdomain.com/wp-cron.php. My issue turned
out to be an improper file permission on my wp-cron.php file
(644 instead of 666) which caused the wp-cron.php file to give the 404...
Fixed the permissions and now the warning is gone. This file gives a 200
code now, and cron jobs finally started to run again.
Maybe the 401 that you are receiving is caused by permissions issues on
this file as well?
"