Question: Login to Plesk from WHMCS redirects to Plesk login page instead of logging in.
Applicable to:Symptoms- SSO connection to Plesk though WHMCS fails. Login to Plesk from WHMCS redirects to Plesk login page back instead of logging in.
- WHMCS is behind Cloudflare,
CauseUser's IP address is changed during a Plesk session. This may happen if user's IP address is dynamic or the domain/hostname which is used as a URL for Plesk is behind Cloudflare.
By default, Plesk does not allow IP address changes during a single session.
ResolutionAllow IP address changes during a single session:
1.Log in to Plesk (use the server IP address if it is not possible to log in using the hostname).
2.Go to
Tools & Settings > Session Idle Time and enable the option
Allow IP address changes during a single session.3.Click
OK to apply the changes.
Command-line instructions1.Connect to the Plesk server via SSH (Linux) / RDP (Windows Server).
2.Run the following command to enable IP address changes during a single session (on Windows Server, start a command prompt as an Administrator):
# plesk bin settings --set disable_check_session_ip=true