
Ensure the server has no pending reboots after attempting to install Windows updates.For more information refer to Installing on an email gateway or relay/perimeter server. If installing GFI MailEssentials on an email gateway or relay/perimeter server, configure that machine to act as a gateway.For more information refer to Antivirus and backup software. Disable third-party antivirus and backup software from scanning folders used by GFI MailEssentials.For more information refer to Firewall port settings. Configure your firewall to allow GFI MailEssentials to connect to GFI servers.For more information refer to System requirements. The machine where GFI MailEssentials is going to be installed meets the specified system requirements.You are logged on using an account with administrative privileges.Information Prerequisitesīefore running the installation wizard, ensure that:

If upgrading over the same major release, license key upgrades are not required. This article describes how to install or upgrade GFI MailEssentials to the latest version. Note that a new license key is required when upgrading to a new major version.
