In order to fix the issue occurred after changing the IP below steps can be followed:
- Go to the Machine where database is installed.
- Open Windows Firewall with Advanced Security.
- Go to Inbound Rules.
- Double click on MySQL.
- Go to Scope tab.
- Under Remote IP address select “These IP Addresses” and Add the new IP address of EMS Server machine and click on Apply.
This workaround would probably fix the changes.