Unable to open wp-admin in WordPress subdomain instance: This feature

[senthil]

Symptoms

• Unable to open wp-admin in WordPress subdomain instance:
  This feature is temporarily disabled for security reasons. Please try again.

Cause
Invalid Additional HTTP and HTTPS parameters for Apache used:

Code Select Expand

ServerAlias *.example.com
<Directory /var/www/vhosts/example.com/>
AllowOverride FileInfo Options
</Directory>
Resolution

• Log in to Plesk.
• Remove the Additional HTTP and HTTPS parameters for Apache in Domain > Hosting > Apache & Nginx