Perform the upgrade when there is no traffic on the server or when it is least impacting on the business operation.

Kerio Connect requires restart during the upgrade.Check that the server meets the latest system and hardware requirements.For more information, please refer to Licenses in Kerio Connect. You are entitled to upgrade to the latest released version during your Software Maintenance period, even post its expiration. Your Software Maintenance expiration date can be found on the splash screen of your Kerio Connect Administration console. Check that the Software Maintenance is valid for the upgrade.We recommend taking a full backup of Kerio Connect.If you are already on version 9.0 or above, please refer to the Upgrading Kerio Connect topic.Versions prior to 7.0.0 are named as Kerio MailServer product. It's highly recommended to upgrade only to the listed milestone versions. The process includes the upgrade path to the milestone versions, that can be downloaded on the Kerio Software Archive website.Īll changes, improvements, and prerequisites for Kerio Connect are cumulative. When upgrading your current Kerio Connect setup older than version 9.0, for example, 8.3.4 patch 1, it requires a specific procedure to follow.

Kerio download archive