https://docs.whmcs.com/9-1/tags/installation/Recent content in installation onHugo -- gohugo.iohttps://docs.whmcs.com/9-1/installation-guide/initial-configuration/enhancing-security/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/installation-guide/initial-configuration/enhancing-security/Enumerates ten security hardening steps for self-hosted installations: securing writeable directories, configuration.php, and crons, restricting Admin Area access by IP, renaming the admin directory, enabling SSL, and restricting database privileges.https://docs.whmcs.com/9-1/installation-guide/system-requirements/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/installation-guide/system-requirements/Lists minimum system requirements for self-hosted WHMCS installations, including supported operating system, Apache version and handlers, PHP 8.2/8.3 with required and recommended extensions and ionCube Loader versions, MySQL version and privileges, database collation, encrypted database connection variables, and recommended file and directory permissions.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/troubleshooting-installation/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/troubleshooting-installation/Indexes installation-related troubleshooting articles and links to General Troubleshooting for display and access issues and to Troubleshooting Updates for problems following a version upgrade.https://docs.whmcs.com/9-1/installation-guide/install-whmcs/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/installation-guide/install-whmcs/Steps through installing self-hosted WHMCS: license purchase, system requirements, uploading files, creating the MySQL database, running the browser-based install.php script, meeting the initial admin account’s password requirements, and setting permissions for configuration.php, attachments, downloads, and templates_c.https://docs.whmcs.com/9-1/installation-guide/install-on-the-command-line/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/installation-guide/install-on-the-command-line/Steps through installing or upgrading WHMCS via the command-line installer: license purchase, uploading files, supplying a configuration.php file or JSON via -c/–config, the admin.password requirements and refusal behavior, and flags like -n, -u, -i, and -s.https://docs.whmcs.com/9-1/installation-guide/install-with-plesk-whmcs-installer/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/installation-guide/install-with-plesk-whmcs-installer/Lists the steps Plesk’s WHMCS Installer extension automates, including installing PHP and ionCube Loader, setting up the MySQL database, installing WHMCS, and applying security steps, then walks through installing the extension from the Plesk Extensions Catalog.https://docs.whmcs.com/9-1/installation-guide/install-ioncube-loader/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/installation-guide/install-ioncube-loader/Details checking for ionCube Loader with a phpinfo page and installing it via WHM’s EasyApache PHP Extensions interface, manual FTP/SSH upload and php.ini zend_extension configuration, or SSH package installation, plus verifying the install in PHP Info.https://docs.whmcs.com/9-1/installation-guide/uninstall-whmcs/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/installation-guide/uninstall-whmcs/Lists the files, folders, and cron jobs to delete when manually uninstalling self-hosted WHMCS, plus steps to delete the database and disable email piping and importing.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/duplicate-tblconfiguration-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/duplicate-tblconfiguration-errors/Explains the install.php step 4 “Oops!” error and the “1062 Duplicate entry for key tblconfiguration.PRIMARY” violation, caused by initiating installation twice simultaneously (for example, via monitoring tools accessing index.php), with steps to disable monitoring, restrict access, drop the database, and restart installation.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-the-database/field-default-value-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-the-database/field-default-value-errors/Documents the “Field xxx doesn’t have a default value” installation error caused by MySQL Strict Mode being enabled, with the fix of disabling Strict Mode.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/license-key-required-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/license-key-required-errors/Covers the install.php step 3 “A license key is required” error caused by a PHP sessions misconfiguration, with steps to upload and run test_sessions.php, confirm the session counter increments on refresh, check session.save_path is writable, and resolve PHP misconfigurations before restarting installation.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/stuck-installation-process/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/stuck-installation-process/Attributes an installation process stuck on Step 4 to the system not meeting WHMCS system requirements, most commonly a PHP memory_limit value below 64 MB, and directs verifying configuration against the system requirements page before retrying.https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/administrator-password-refused-errors/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/troubleshooting/troubleshoot-installation/administrator-password-refused-errors/Covers the web and CLI installer’s initial-admin password refusal: the 12-64 character, 72-byte, letter, number, and UTF-8 rules, the HTML-encoded-length edge case, and the CLI’s stdout-only, unlogged message with a non-zero exit status.https://docs.whmcs.com/9-1/system/database-and-storage/database-and-storage-tutorials/disable-mysql-strict-mode/Mon, 01 Jan 0001 00:00:00 +0000https://docs.whmcs.com/9-1/system/database-and-storage/database-and-storage-tutorials/disable-mysql-strict-mode/Gives the steps to disable MySQL Strict Mode by editing the sql_mode setting in /etc/my.cnf and restarting the MySQL service, including the WHM path via Restart Services > SQL Server (MySQL).