Troubleshooting InstallationWhen you install WHMCS on a server, make sure to watch for errors both during and after the installation process.
Duplicate tblconfiguration ErrorsTroubleshoot and resolve 1062 Duplicate entry for key tblconfiguration.PRIMARY errors.
License Key Required ErrorsTroubleshoot and resolve A license key is required. errors during installation.
Stuck Installation ProcessTroubleshoot and resolve issues that cause the WHMCS installation process to stop on Step 4.