In a MSM setup with 5 sites, I can log in fine through the “main” (first) site, where the system folder is located. From there, I can administer, publish… to all 5 sites without a problem.
But I cannot login through the admin.php on any other site, nor with a login form on the page itself (with the login form, the message says “you are logged in now”, but after the redirect, I am not).
I read in other threads to try and clear the cookie settings, but cannot do that. When I edit anything on the Cookie Settings page and save it, I get the green “success”-massage, but the form fields revert back to the old content. Checked file permissions, everything as it should be according to the docs.
I tried clearing the caches, did not make any difference.
What else can I do?