today, I started to have experience with "wp-login.php .403 error" with the message "Not Acceptable".
I already had this issue back in June and succesffuly fixed that by adding this one to .htaccess file:
Deny from all
Allow from all
But today (after 3 months), the problem occured again. I tried to create the clean new .htaccess file, but that did not help. I tried to add mod.security or directory index or some wp cookie filter to that .htaccess file, but this time none of it worked.
Do you have some news regarding current attacks on WordPress? If so, what can I do to fix my problem this time?
Thank you for some answers.