You have several upgrade options:
|Upgrade option:||Applies to:||Comment:|
|ESET PROTECT All-in-one installer (this article)||Windows||This is the recommended option if the existing server has the default installations of MS SQL database and Apache Tomcat (the existing installation was performed via the All-in-one installer).|
Windows and Linux
|Manual component-based upgrade||Linux||Upgrade instructions for advanced Linux users.|
The following steps will upgrade both ESMC components (Server, Console) and the ESET Management Agent(s). When upgrading to the latest version, your policies will be preserved.
Starting January 2019, Oracle JAVA SE 8 public updates for business, commercial or production use require a commercial license. If you do not purchase a JAVA SE subscription, you can use this guide to transition to a no-cost alternative and install one of the listed supported Java editions.a) To select the already installed Java, click Select a Java installation, select the folder where Java is installed (with a subfolder bin, for example, C:\Program Files\Amazon Corretto\jdk11.0.6_10) and click OK. The installer prompts you if you have selected an invalid path.
Read the Knowledgebase article: [KB7654] Deploy or upgrade ESET endpoint products using ESET PROTECT.