Did you also change the htaccess rules? Go back to the network setup page and snag the new rules.
Also, that look of the site is a well known and often covered issue. In this case, if the htaccess changes don’t fix it, then your server is not even reading the file and you’ll have to complain to the host.
No I haven’t change it, sorry
my current htaccess now
#Made Multi-Site with Multi-Site Enabler 1.5#
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
# uploaded files
RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule . index.php [L]
WHere I should put
# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]
# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^[_0-9a-zA-Z-]+/(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^[_0-9a-zA-Z-]+/(.*\.php)$ $1 [L]
RewriteRule . index.php [L]
# END WordPress
I got the code from http://codex.wordpress.org/Create_A_Network#Switching_between_subdomains_and_subfolders
thank you very much
Don;t get the code from the codex, get the code from your own install. Right under the network setup screen.
#Made Multi-Site with Multi-Site Enabler 1.5#
this is also part of your problem. while the plguin to help create a network sound like a good idea, they do not work reliably. you’re copy/pasting two things and clicking a button, that’s it.
T T
But I already co-pas the code9from the codex) into my .htaccess and it works fine for now ( Hope it won’t become disaster in future …)
If it works, that’s fine. Just be sure you REPLACED the code.
