Troubleshoot and resolve Order Not Found...Exiting... errors.
Troubleshoot and resolve General error: 3988 Conversion from collation utf8mb3_unicode_ci into latin1_swedish_ci impossible for parameter errors.
Troubleshoot and resolve SFTP Backup - Login Failed errors.
You can configure storage settings that determine how WHMCS stores many types of files. This can include different types of attachments, downloads, knowledgebase images, and more. You can add local locations or configure storage using services like Amazon S3™.
WHMCS allows you to prune logs to reduce the size of the database and reduce disk space.
Troubleshoot and resolve Unable to connect to the database errors.
You must disable MySQL® Strict Mode (sql_mode) to run WHMCS on your server. We recommend disabling this immediately after you finish installation.