Wordpress admin login cookies blocked error after moving servers

Question

Background: had a working Wordpress 3.7 site at olddomain.com.

I moved it to newdomain.com successfully, and in the process added this to wp-config:

Answer 1

I have found very good solution of this issue

There are possible following solutions for this error

1. Coding Error
2. Unnecessary Spaces in Code
3. Caching & Security Plugin

Check this article: https://www.scratchcode.io/cookies-are-blocked-or-not-supported-by-your-browser/