WHMCS includes features to help keep your data safe, and we recommend taking additional steps to secure your WHMCS installation further. Thank you for choosing WHMCS! From installation to configuring your store, our simple setup process will help you get up and running fast. The first step to using WHMCS is installing it on your server. WHMCS includes an easy browser installation tool to suit most users' needs. When you install WHMCS on a server, make sure to watch for errors both during and after the installation process. If you want more configuration options than browser-based installation offers, you can install and upgrade WHMCS on the command line. For successful installation, updates, and operation, your system must meet the minimum system requirements for your WHMCS version. If you use a cPanel & WHM version that supports it, you can install WHMCS easily using deprecated cPanel's Site Software feature. You can use Plesk's WHMCS Installer extension to easily install and configure WHMCS on a Plesk server. ionCube Loader® is a PHP extension that allows decoding and encoding of WHMCS files. Make sure your system uses the correct version. The Getting Started Wizard appears the first time that you log in to the Admin Area. These steps help you configure company information, payments, domain registrations, MarketConnect sales, and other important settings and features in WHMCS. If you need to uninstall WHMCS, you can do so manually by removing the related WHMCS files, data, cron jobs, and email piping or importing. Check off each item in the System Settings Setup Tasks list to ensure that you have completed initial setup for your WHMCS installation. Troubleshoot and resolve 1062 Duplicate entry for key tblconfiguration.PRIMARY errors. Troubleshoot and resolve Field xxx doesn't have a default value errors. Troubleshoot and resolve A license key is required. errors during installation. Troubleshoot and resolve issues that cause the WHMCS installation process to stop on Step 4. You must disable MySQL® Strict Mode (sql_mode) to run WHMCS on your server. We recommend disabling this immediately after you finish installation.