Back up your WHMCS files and database before installing or upgrading.
- Extract the download and upload its contents into your WHMCS root, preserving the directory structure. The package contains modules/addons/staff_wiki and includes/whmcsnowcore.php.
- Open System Settings > Addon Modules (Setup > Addon Modules on older installations), activate Staff Wiki and allow access to the required administrator roles.
- Open Addons > Staff Wiki and activate your licence.
For an upgrade, upload the new files over the existing installation. Keep the existing database tables and private upload storage. Existing articles, permissions and settings are preserved; retired editor files are moved to private storage when the upgrade runs. TinyMCE selections switch to Jodit. Do not remove the existing addon or its data to upgrade.
Use the PHP version supported by your WHMCS installation, with a compatible ionCube Loader. Formatted articles require PHP DOM; backups and Office attachments require PHP ZIP. Private file storage must be writable by the account running WHMCS.