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Upgrade to the latest version

New versions of ESET Mail Security are issued to provide improvements or fix issues that cannot be resolved by automatic updates of program modules.

Upgrade methods:

Uninstall / Install - Removing the earlier version before installing the new one. Download the latest version of ESET Mail Security. Export settings from your existing ESET Mail Security if you want to preserve configuration. Uninstall ESET Mail Security and restart the server. Perform a fresh installation with the installer you have downloaded. Import settings to load your configuration. We recommend this procedure if you have a single server running ESET Mail Security.

In-place - An upgrade method without removing the existing version and installing the new ESET Mail Security over it.


It is necessary that you have no pending Windows Updates on your server, as well as no pending restart due to Windows Updates or for any other reason. If you try performing in-place upgrade with a pending Windows Updates or restart, the existing version of ESET Mail Security may not be removed correctly. You will also experience problems if you decide to remove the old version of ESET Mail Security manually afterward.


A server restart will be required during the upgrade of ESET Mail Security.

Remote - For use in large network environments managed by ESET PROTECT. This is basically a clean upgrade method, but carried out remotely. It is useful if you have multiple servers running ESET Mail Security.

ESET Cluster wizard - Can also be used as an upgrade method. We recommend this method for 2 or more servers with ESET Mail Security. This is basically an in-place upgrade method, but carried out via ESET Cluster. After the upgrade is completed, you can continue using ESET Cluster and take advantage of its features.

The following settings are preserved from previous versions of ESET Mail Security:

General ESET Mail Security configuration.


Antispam protection settings:

All settings that are identical in previous versions, any new settings will use defaults.

Whitelist and blacklist entries.


After you have upgraded your ESET Mail Security, we recommend you go through all the settings to ensure it is configured correctly and according to your needs.