- Your Internet Servive Provider (ISP) has a short DHCP lease time, due to which your IP address change frequently.
- You are logging into cPanel control panel using same account from two different machines concurrently.
- Login to WHM with root account >> Main >> Server Configuration >> Tweak Settings >> click on Security tab.


- Check for Cookie IP Validation and change settings to Loose - or you can disable it completely.
- Clear your browser’s cache and restart your Internet connection, and then try again.

