Multisites Addon Domain login Issue

Do you have COOKIE_DOMAIN defined in your wp-config.php ?

Thanks for your Reply Ron.
No i didn’t where i have to place it in wp-config.php?

No i didn’t where i have to place it in wp-config.php?

Having it in your wp-config.php is usually the thing that would cause the problem above. You checked and verified that it wasn’t there? If so, search your plugins to see if one of them (other than domain mapping) is defining it.

We have same issue here. grepped for COOKIE_DOMAIN (grep COOKIE_DOMAIN wp-content/plugins/ -R) and looks like none of the plugins has it. Neither wp-config.php.

Where else should it be checked or is there another hint?

As an addition: WP 3.5.1 with MultiSite enabled, Domain Mapping plugin 0.5.4.3.

Other plugins installed:

# ls -1 plugins/
admin-collapse-subpages
audit-trail
breadcrumb-navxt
cms-tree-page-view
co-authors-plus
content-slide
disable-comments
media-author
raw-html-pro
relevanssi
slideshow-jquery-image-gallery
user-role-editor
wordpress-mu-domain-mapping
wp-password-generator

Where else should it be checked or is there another hint?

After you log in and get redirected, check you browser cookies and see if you have a cookie wordpress_logged_in_ …

Yes, I do, here is one from my Chrome cache for main site ‘a’, that is the original one. I’m able to login:

Name: wordpress_logged_in_0b05c08f38c5323935ffe5a8b32fc8d0
Content: my_login%7C1366184004%7Cfbc44d09c76abdb165e5a1293e3391d8
Domain: .a.mysite.com
Path: /
Send for: Any kind of connection
Accessible to script: No (HttpOnly)
Created: Monday, April 15, 2013 10:33:24 AM
Expires: When the browsing session ends

When I go My sites / Site ‘b’ / Dashborad I get login screen. No new cookies appear, neither login is possible with correct password.

I took “Remote Login” off, now can login to site ‘b’ at least, though by typing a password, no automatically.

Correct if I’m wrong, “remote login” is a kind of single-site-login option, thus logged in once to any site one shold be able to switch with no password between all sites configured with WP MS? When it is off, one will need to login to all sites separately?

Re looking for the cookie I menat for the mapped domain where it kept redirecting vs one for the main site where logins were working.

thus logged in once to any site one shold be able to switch with no password between all sites configured with WP MS?

No, it doesn’t necessarily log you into all of them. If you log into the mapped domain then you are also logged into the unmapped/main domain. IOW, you are logged into the mapped domain and all of unmapped sites.