blog/post htaccess 404

Hey ya’ll I’m new to WordPress but experienced with Joomla! So I know how to fix a thing or two… Yet there is one problem I cant get fixed.

I would like to add a blog to my (static) website I thought it would be nice to do so from a widget in my sidebar. But when I click the post it returns a 404.
I’ve been searching for a fix but nothing resolves my issue.
I’ve been using custom permalinks because of the google indexing.
I want ~/portrait instead of ~/?p=123.
Also I use the htaccess file ase you can see below.

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

# END WordPress

Is there someone (somehow) outhere who knows how to fix this for me?