I’ve come hoping someone here can help. I’ve been a hobbyist WP site builder for a while, and even installed a running multisite before. This has me stumped.

I’m currently helping my friend build a network of sites. She’s on a shared hosting package, and the main site for her multisite is NOT the primary site in Cpanel. I created the network, and everything’s gone fine–until the domain mapping.

Once we map the domains, the result is a big, empty white screen. I’ve tried EVERYTHING I know to do, and attempted some fixes found here as well. Nothing’s worked. Any suggestions? I’d be so grateful.

Details:
– Shared hosting via Stablehost
5 sites total on the *hosting* account (Primary, Multisite Main (2 subdomains), 3rd “top level” site
Primary site is NOT the one being used for multisite build
All domain nameservers are correctly pointing to the host

– Wildcard subdomains are active
– Sunrise.php is in the wp-content folder for the Multisite main site

Fixes I’ve tried:

A name record as domain map destination (65.60.38.44)
CNAME record
Setting domain as an “addon”
Setting domain as a “parked” domain
“IfModule” rewrite command in .htaccess (with and without)
Moving the ‘define sunrise’ line in wpconfig file (above allow MU/below)
Countless other things I can’t remember off hand

Am I missing something? Please help!

Thanks!

Check out the code below. Website removed out of respect for my friend:

define('SUNRISE', 'on');

/* Multisite */
define( 'WP_ALLOW_MULTISITE', true );

define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', true);
define('DOMAIN_CURRENT_SITE', 'REAL-SITE-HERE.com');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);

# BEGIN WordPress

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ $1 [L]
RewriteRule . index.php [L]

# END WordPress

Fatal error: Call to undefined function is_multisite() in /home/a6695404/public_html/wp-includes/default-constants.php on line 20

What to do inside default-constants.php file, waiting for response…

I Have installed wordpressin a folder called /word then changed the index to be in the root and was working normal in single site

Then i have changed to Multisite .

now when i try to open my pages it sends me to the wrote and cant get to my pages links

was it wrong to make it to the Root ???

set up multi in a blog folder : example.com/blog/

added a second site : example.com/blog/webinar/

all works fine except on the main https://programyourselfthin.com/blog/

if you add www to anypost

www.programyourselfthin.com/blog/lesson-65-a-new-perspective-on-bad-habits/

redirects to https://programyourselfthin.com/blog/

use no www all works fine.

https://programyourselfthin.com/blog/lesson-65-a-new-perspective-on-bad-habits/

I have no problem in the second multisite created

https://programyourselfthin.com/blog/webinar/

https://programyourselfthin.com/blog/webinar/my-test/
www.programyourselfthin.com/blog/webinar/my-test/

can use www or no www and it redirects like it should to the same post.

any idea?

I have searched the forum for related topics and tried the answers provided, ie changing the htaccess a couple of times but the same thing happens…

Could someone please help me out with live chat as I am totally new to wp and already spent a lot of time tried to solve the problem.

Thanks
LEC