Gamechanger

By the way, https://www.epicase.de/wp-login.php redirects me to https://epicase.de/wp-login.php – That’s exactly what I was talking about ??

King.

Did you map both www and non-www domains? Which did you set as primary?

I did answer this before. I do not know where to map domains. Can you please give more concrete advice, such as “open this or that file, change this or that function”?

When you go to https://www.firstdomain.de/wp-login.php does the URL change to https://firstdomain.de/wp-login.php or does it stay the same?

No, it stays the same.

The first domain is https://www.gadgetlife.de the second https://www.epicase.de

But please mind that I usually (not while anwering your questions) keep
define('SUBDOMAIN_INSTALL', true);
Otherwise I can`t run the second site properly. So I keep the site
define('SUBDOMAIN_INSTALL', false); between 5:oo to 6:00 pm CDT

Yes, it changes the domain, if I put www. before to without any prefix (at FF 20.0). So they both work.
BUT, the second site page https://www.secondsite./xx redirects to the homepage of the first site https://www.firstsite.de

When casus cnaksus is to switch between define(‘SUBDOMAIN_INSTALL’, false); and define(‘SUBDOMAIN_INSTALL’, true);

When there is define(‘SUBDOMAIN_INSTALL’, false); as you say has to be like this, then I CAN login, BUT I get permanently redirected to the homepage of my first site, when I try to reach a undersite of my 2ed-xx site.

When there is define(‘SUBDOMAIN_INSTALL’, true); I can`t login and it indeed refreshes the login site without https://www., even when I put it in before.

So I currently login via define(‘SUBDOMAIN_INSTALL’, false); to work with define(‘SUBDOMAIN_INSTALL’, true); – a total mess.

So what is wrong here?

If you mean “I go to the login screen and enter my username and password, but the screen just refreshes without a message, not logging me in”is a good description, then take this as a description what`s happening on my site, when I try to log in.

I have read on the German WP forum that they solved this same issue (at the same hoster btw) by adding the www. on the “domain mapping” and dropping it on the preferences site under WP network. I dont know exactly what is meant by "domain mapping" in this case, but I did also drop the www. on the network preferences (except on the first domain) but this doesnt changed any.

I also dont know whats the “correct” .htaccess. If I would know that, I could say this is not the problem. It just looks like this:

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [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).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]

Any advice!?

No, I don`t get any error message.
I just cant login to the new site. Whats so difficult to understand?
I hope anybody has a tip for me to solve that issue.

Yes, I deleted all cookies and also tried it with different browsers.
There is no special error message. It is just the case that I I have ether a redirect from any undersite when define('SUBDOMAIN_INSTALL', false);
or having trouble with login when define('SUBDOMAIN_INSTALL', false);

I did so and recognized that there is a bunch of plugins which doesnt work properly anymore, due to "cant modify header information”

How can I create such a table?

Yes.

I have a similar issue here:
wp_order_itemmeta: Table ‘DB12345678.wp_order_itemmeta’ doesn’t exist
I doesn`t run a network, ether not a mu theme. I do run woocommerce as shop plugin. This happened after changing the domain name into a wrong http:/www.xxx.de

This is a real big issue, because database isn`t reachable right now!

Can anybody help???

Hey,

I would like to, but I`m not familiar with Github. Sorry.

Regards,
Gabriel

Thanks for answer Andrea,

the thing was, that I meanwhile deleted the >define(‘WP_ALLOW_MULTISITE’, true);< out of my config, so that I had no network option.

In case of the hidden .htaccess file, I wasn`t able to change it over any ftp-app under any function. I had to do that over the servers advanced options.

No it`s solved so far.