What should you do before uninstalling an older version of 3CX?

Taking a full backup of the current installation is a critical step before uninstalling an older version of 3CX. This ensures that all configurations, settings, call logs, and any other important data are securely stored. In the event that something goes wrong during the uninstallation or the installation of the new version, you can restore the system to its previous state without losing any information.

Backup procedures are essential in IT management as they protect against data loss due to unexpected issues, such as compatibility problems or system errors. By having a complete backup, you can confidently proceed with the uninstallation and subsequent installation of the newer version, knowing that you can recover from any potential mishap.

Other choices do not address the necessity of safeguarding the existing data and configurations, which is paramount in ensuring a smooth upgrade process. Configuring a new version or updating system settings should only occur after a successful backup and should be part of post-installation tasks. Restarting the server, while sometimes necessary after software changes, does not mitigate the risks involved without a backup.