Upgrading to Veeam Backup Enterprise Manager 12.3 Before you upgrade Veeam Backup Enterprise Manager to version 12.3, check prerequisites.To upgrade Veeam Backup Enterprise Manager, take the following steps:Start the upgrade wizard.Select Enterprise Manager as a product to upgrade.Read and accept the license agreements.Review Enterprise Manager components to upgrade.Provide a license file.Install missing software.Specify a service account.Specify a database server.Begin upgrade.Finalize upgrade.