You may be experiencing the problem of Wordpress Automatic Plugin Upgrade not working. However, there is a solution to fix the problem. Follow all these method.

1. Open your SSH access with putty
2. Type out this command
   

   vi /etc/hosts
   i

3. Add 72.233.56.138 downloads.wordpress.org and press escape
4. Type :wq , and press Enter.

That’s all. Enjoy