after automatic upgrade,3.1.1 cannot access network admin panel

I found the fix.
Go to “wp-config.php”

After update website(DOMAIN_CURRENT_SITE) address with www

define('WP_DEBUG', false);
define('WP_ALLOW_MULTISITE', true);
define( 'MULTISITE', true );
define( 'SUBDOMAIN_INSTALL', true );
$base = '/';
define( 'DOMAIN_CURRENT_SITE', 'www.freenetsave.com' );
define( 'PATH_CURRENT_SITE', '/' );
define( 'SITE_ID_CURRENT_SITE', 1 );
define( 'BLOG_ID_CURRENT_SITE', 1 );

So take off the www

code should be like this

define( 'DOMAIN_CURRENT_SITE', 'freenetsave.com' );

my problem solved

try this way

Hey I have same problems here, I have done that way above and worked like charm.

But When I tried installed plugins its redirect to login, When I looked at the url and I found the problem. Its about www and non-www, ( I have multisite with directory not subdomain ). And my site using www.

Any help for this issue

I also have the same problem, but I’m running a multisite with subdomains. My DOMAIN_CURRENT_SITE was already non-www., so that is not the solution.

Hi Knome
I’m also running multisite with sub-domains, but after 3.1.1 update my “define(‘DOMAIN_CURRENT_SITE” address with www. According to my situation, when I remove www it works for me. I am not expert but this is how it’s working for me.

No www was added in my update. Any further ideas? I’ve also started a separate thread (linked in my earlier message), if it starts to seem I’m having a different issue.