WP admin is displayed without formatting.

Hello,
Although a screenshot would have been helpful …

Have you installed any cache plugin? Try disabling that plugin.

Do you have mod security enabled? It’s rules could have triggered for your IP and showing distorted dashboard.

Have you tried clearing your browser cache? Viewing in incognito mode is recommended.

Hello

Although a screenshot would have been helpful …

link

Have you installed any cache plugin? Try disabling that plugin.

No. I tried to deactivate all installed plugins and nothing.

Have you tried clearing your browser cache? Viewing in incognito mode is recommended.

Yes, it has no effect.

Do you have mod security enabled? It’s rules could have triggered for your IP and showing distorted dashboard.

I’m connected via LAN. However, I have tried other sites and there it works. So the problem is obviously in this particular site.

In wp-config.php before require_once add below code into file :

define(‘CONCATENATE_SCRIPTS’, false);

If that does not work then try the following: 1) Clear your browser cache. 2) Re-install WordPress (keep wp-content and your database, just reinstall the core files)

In wp-config.php before require_once add below code into file :

define(‘CONCATENATE_SCRIPTS’, false);

I connected via FTP and added the mentioned line. And it didn’t help, the web didn’t even load.

If that does not work then try the following: 1) Clear your browser cache. 2) Re-install WordPress (keep wp-content and your database, just reinstall the core files)

OK. But how do I update only the core and keep the original files, please?

You can restore WordPress core files using FTP. If you need a guide, you can refer https://www.rshosting.com/kb/29/how-to-reinstall-wordpress-core-files

Hello @rshosting

I’m so sorry, I forgot to write here that I’ve already solved it. I mean, I wrote to support web hosting and fixed it. When I asked, they wrote that they commented on this code in the .htaccess file.

# BEGIN WP CERBER GROOVE
# Protection of admin scripts is enabled (CVE-2018-6389)
# <IfModule mod_rewrite.c>
# RewriteEngine On
# RewriteBase /
# RewriteCond %{REQUEST_URI} ^(.*)wp-admin/+load-scripts\.php$ [OR,NC]
# RewriteCond %{REQUEST_URI} ^(.*)wp-admin/+load-styles\.php$ [NC]
# RewriteCond %{HTTP_COOKIE} !cerber_groove_x_NypQ...
# RewriteRule (.*) - [R=403,L]
# </IfModule>

Obviously, this is a remnant of this plugin that I uninstalled from the site (I don’t know how it happened)

Anyway, it’s working properly now. Thank you.