In this article, we’ll highlight the most impactful changes and provide helpful links to documentation so you can start exploring the new functionality right away. Let’s take a look!

Home Screen

The main Nagios XI home screen received several visual and functional improvements in the 2026 release, making it more than just a landing page—it’s now a true hub for navigation and monitoring. One of the most noticeable additions is the new Host Treemap, which provides a quick, color-coded overview of each host and its associated services. This intuitive, space-efficient dashlet makes it easier than ever to identify problem areas at a glance and monitor overall infrastructure health right from the dashboard.

In addition to visual updates, the homepage now includes helpful tabs: Getting Started, Admin, and Popular Wizards. These sections offer quick links to common tasks and important areas of Nagios, allowing new and experienced users alike to navigate more efficiently. Whether you’re setting up your first checks, managing users, or launching new Configuration Wizards, the updated homepage gets you there faster.

Customize the Landing Page in Nagios XI 2026

Smart Dashboards

A major highlight of XI 2026 is the introduction of Smart Dashboards—a next-generation dashboarding system built for flexibility, interactivity, and ease of use.

The Add Dashlet interface makes building Smart Dashboards faster and more intuitive. Dashlets are now organized by type with clear labels. Whether you’re dropping in graphs, gauges, statistics, or external content, the streamlined experience makes it easy to customize your dashboard with just a few clicks.

How To Use Dashboards in Nagios XI 2026

New and Improved Dashlets:

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Graph Dashlet

Bar Chart Dashlet

Gauge Dashlet

Pie Chart Dashlet

Statistic Dashlet

Text Dashlet

Treemap Dashlet

URL Dashlet

Alert Heatmap Dashlet

In addition to new dashlets, this release introduces:

• A Global dashboard Setting, for team-wide Smart dashboards.
• Ability to customize dashboard icons and icon colors in the Neptune Theme.
• Updated Dashboards menu to support both Smart and Legacy Dashboards across Modern and Neptune Themes.
• Dashboard Wizards for both Smart and Legacy dashboards.

Quickly create and customize dashboards with the Dashboard Wizard—supporting both Smart and Legacy dashboards for a faster, more streamlined setup experience.

Added Google.com as default host

To help users get started with monitoring right out of the box, Google.com has been added as a default host in Nagios XI 2026. This provides an immediate example of website host and service monitoring in action, making it easier for beginner users to see how checks are configured and displayed—no setup required.

New Monitoring Wizards

Nagios XI 2026 continues to expand monitoring capabilities with a brand-new wizard:

• Meraki Switch Wizard – Quickly set up monitoring for Cisco Meraki Switches.

How To Monitor Meraki Switches With Nagios XI 2026

Quality of Life Improvements

• A new Getting Started notification welcomes new users with a link to documentation.
• New default host: Google.
• New default hostgroups: Websites, Switches.
• New default servicegroups: Web Services, SSL Certificates.
• Added support for experimental features toggle in Admin settings.
• Added a Re-run job feature to the SNMP Walk Jobs page.
• Improved app-wide error handling and logging.

Optional Statistics Tracking

XI 2026 introduces optional usage statistics tracking (opt-in/out) to help the Nagios Team better understand how the software is used, so future versions can be even more user-friendly.

Changelog

To review all the changes in detail, including security fixes and development notes, visit the full changelog here:

Nagios XI Changelog

Getting Started

If you’re new to Nagios XI or ready to upgrade to the 2026 release, download the trial version here:

Nagios XI Downloads

Another great resource is this article, which provides tips and resources on how to quickly get started using Nagios XI:

Quick Start Guide (Modern Theme)

If you’d like a personalized walkthrough of Nagios XI 2026 tailored to your specific environment, or a hands-on remote session with one of our technicians to help you get started, we’d love to offer you a Quickstart session or free Demo.

To schedule your session—or for any other assistance—just email us at sales@nagios.com. Our sales and technical teams are here to help you get the most out of your Nagios XI 2026 trial and ensure you’re set up for success!

Premium Features in Nagios XI are a collection of features and wizards that are tied to having active License Benefits (Maintenance & Support).

Maintenance

Maintenance benefits provide you with the ability to upgrade your installation with the latest version releases, features, and bug fixes, giving you the tools to ensure your environment remains safe and secure.

Support

Support benefits gives you access to our commercial Support portal the Nagios Answer Hub and Case Support within it.

Why is this important?

When you purchase a Nagios license, it comes with License Benefits for the first year. Thereafter, you have the option to renew the License Benefits on an annual or multi-year basis. Our licensing is perpetual by nature, meaning that if you do not renew, the standard functionality of the software continues to function at whatever version you were on upon expiry. However, you would not have continued access to the Maintenance & Support benefits described above! Including the Premium Feature set in XI.

To ensure continued access to these Premium Features and all the latest and greatest updates, we suggest you renew your Nagios XI license benefits annually. In the event that your license benefits expire, simply renew, and the full list of Premium Features will regain functionality automatically.

If you recently purchased or renewed an XI license, you automatically have access to these features. Simply upgrade to XI version 2024R2 or newer and enjoy!

If you have questions about how our licensing works, please contact sales@nagios.com.

Premium Features

• Single Sign-On (SSO) via MS Azure AD
• The Remote Workers Nagios Mod-Gearman management interface
• Premium Wizards
  • Red Hat OpenShift
  • Prometheus
  • vSphere
  • Oracle Tablespace, Serverspace, and Query
  • MSSQL Server, Database, and Query
  • Kubernetes
  • HyperV
  • Docker
  • Cloud VM (DigitalOcean, Google Cloud, Linode, Azure, and Rackspace)
  • Amazon EC2 and S3
  • Zabbix Agent
  • OpenAI Usage

We released a short video on some of these Premium Features here:

New Premium Features in Nagios XI

Changelog

You can find our full Changelog here if you’d like to review all the changes, including new feature updates, details on bug fixes, and security patches:

Nagios XI Changelog

Getting Started

If you’re new to Nagios XI and want to take the latest version for a spin, you’ll find the free, fully functional trial version here:

Nagios XI Downloads

Another great resource is this article written by our Technical Content Manager, Shamas, which provides tips and resources to help you make the most of your free trial:

If you’d like a guided personal tour of XI geared toward your unique requirements or a hands-on remote session with one of our techs to help you get a few things set up, we’d love to offer you a free Demo or Quickstart. To set this up, or for any other help you may need, feel free to email sales@nagios.com so we can give you a hand. Our sales and technical teams will do all they can to help you maximize your free trial!

New Monitoring Wizards

Three great new wizards join the ranks in XI 2024R2: Kubernetes, Zabbix Agent, and the Generic Plugin Wizard. We’ve also updated the NSClient++ Wizard.

Kubernetes with NCPA

This Premium wizard enables you to monitor Kubernetes clusters via the NCPA agent. Available metrics include Nodes Active, Daemon Sets, Deployments, Jobs Failed, Pod Restarts, Replica Sets, Stateful Sets, TLS, PVC, and Unbound PVS. You can learn more about the initial setup here:

Monitoring Kubernetes Clusters with Nagios XI and NCPA

Zabbix Agent

With the new Zabbix Agent Wizard, one of XI 2024R2’s Premium features, you’ll be able to leverage your existing Windows and Linux Zabbix agents to set up comprehensive monitoring in Nagios XI:

Monitoring Zabbix Agents with Nagios XI

Generic Plugin Wizard

The new Generic Plugin Wizard provides a quick way to set up monitoring using custom plugins. This enables you to create a command to execute your custom plugins, and setup a Nagios check for it without the need to go to the Core Config Manager.

This document provides step-by-step details on using the wizard:

Using the Generic Plugin Wizard in Nagios XI

NSClient++ Wizard

Also worth mentioning is that we added support for check_nrpe to the NSClient++ Wizard and updated its status from Legacy, making it once again a current wizard.

SSO

A big request we’ve seen over time from our users is an SSO option, and we’re excited to introduce Single Sign-on via Microsoft Azure Active Directory in 2024R2. You can access this feature in Admin > External Sign-On(SSO) menu and can learn more about setting it up here:

Configuring SSO in Nagios XI 2024R2

NagVis Enhancements:

• Most Map elements now have relative positioning
• The Edit Map menu can now be accessed with a right-click
• Added missing support in NagVis for Nagios custom variables with an NDO backend

Nagios Core Updated

The Nagios Core engine at the heart of Nagios XI has been updated to 4.5.9.

NCPA v3 Support for Deploy Agent

The Auto Deployment feature, which enables you to push NCPA (the Nagios Cross Platform Agent) to remote hosts right from the Nagios XI UI, previously only supported NCPA v2, an older version of the agent. Now you can also deploy NCPA v3, the latest version, with the tool. This enables you to take advantage of all of the updates that went into v3, while still leveraging the convenience and centralized control of Auto Deployment.

Introducing Premium

In Nagios XI 2024R2, we’re introducing a new Premium Features model. Premium Features are a benefit of active license Maintenance. To ensure continued access to these features, we suggest you renew your Nagios XI license annually. In the event that your license expires, simply renew your license, and the full list of Premium Features will regain functionality automatically. The Premium features include:

• Single Sign-On (SSO) via MS Azure AD
• The Remote Workers Nagios Mod-Gearman management interface
• Premium Wizards
  • Prometheus
  • vSphere
  • Oracle Tablespace, Serverspace, and Query
  • MSSQL Server, Database, and Query
  • Kubernetes
  • HyperV
  • Docker
  • Cloud VM (DigitalOcean, Google Cloud, Linode, Azure, and Rackspace)
  • Amazon EC2 and S3
  • Zabbix Agent
  • OpenAI Usage

Changelog

You can find the full Changelog here if you’d like to review all the changes, including details on bug fixes and security patches:

Nagios XI Changelog

Getting Started

If you’re new to Nagios XI and want to take 2024R2 for a spin, you’ll find the free, fully functional trial version here:

Nagios XI Downloads

Another great resource is this article, which provides tips and resources to help you make the most of your free trial:

If you’d like a guided personal tour of XI geared toward your unique requirements or a hands-on remote session with one of our techs to help you get a few things set up, we’d love to offer you a free Demo or Quickstart. To set this up, or for any other help you may need, feel free to email sales@nagios.com so we can give you a hand. Our sales and technical teams will do all they can to help you maximize your free trial!

This document is intended for use by Nagios Fusion Administrators who want to keep their Nagios Fusion installation up-to-date with the latest features, fixes, and security improvements.

Upgrading-Nagios-Fusion-Using-the-Web-UI.pdf

Upgrading-Fusion-2024-Using-the-UI.pdf

This document is intended for use by Nagios Log Server Administrators, Nagios Authorized Resellers, and implementation partners.

Upgrade-Instructions-For-Nagios-Log-Server.pdf

This document is intended for use by Nagios Network Analyzer Administrators, Nagios Authorized Resellers, and implementation partners.

NNA 2.x

Upgrade_Instructions_For_Network_Analyzer.pdf

NNA 2024

Upgrade-Instructions-in-NNA-2024.pdf