Permalink – 404

Dear community,

I know this problem has already been very often discussed but atm I really don’t know what I else should do.

Now to the problem: After activating the Permalink to “Day and Name” and adding the .htaccess file with the code posted in the dashboard I always get the following error message:

Forbidden
You don't have permission to access / on this server.

.htaccess

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

The Blog is reachable by a subdomain http://blog.rg89.de
Without the .htaccess entry everything is working without any problems.

I also checked the mod_rewrite which is activated and installed on the server.
So atm I really don’t now what to do 🙁
I already searched some hours in google for a solution….
Did any of you have an idea?