OOPS, I made a mistake.
Everything works now. Great.
Thank you.
Thank you for your reply. I’ve got the second site run multisite smoothly as it supposed. But not the the first site I made the first attempt, even after I removed WP and re-installed. Same problem showed up as usual as it was with other browser.
Yes, I know that it is not WP’s issue, if I can have the Multisite running on the second site, but not the first one. Don’t know why.
It may not be server side problem, as well. wired problem. Thank you anyway.
404 error for the URl subdomain.mydomain.com/wp-admin/
Should I make changs on DNS?
I did not use domain mapping. The issues are the same after I tried WordPress MU domain mapping plugin.
Any suggestions?