Even as newer versions emerge, the foundations of 21.0.x remain the industry standard:
Dedicated sensors for Microsoft Azure, Amazon Web Services (AWS), and Google Cloud Platform (GCP) to track cloud storage, instances, and billing.
Input your license key during installation. PRTG will automatically run a connectivity check to validate the key with Paessler servers.
If you are planning to scale your deployment or migrate legacy systems, please share: Your
Best-tested versions optimized for live enterprise environments, released roughly every 8 weeks.
The 21.0.x updates addressed stability issues within the WebGUI, particularly in channel unit configurations where dropdown menus for Byte-based bandwidth sensors were restored to proper functionality.
The 21.0.x branch provides out-of-the-box templates and sensors for hybrid infrastructures:
By setting credentials at the group level, any device added to that group automatically inherits the correct login properties, saving massive amounts of manual entry. Step 3: Running Auto-Discovery Safely
The general upgrade path for very old versions (pre-16.x) typically looked something like: . For versions 16.x through 22.0.x , the path is generally shorter: Current Version → 22.1.75.1594 → 25.1.104.1906 → Latest Version . Versions 22.1.x and above often allow a direct update to the latest version.
PRTG Network Monitor 21.0.x is an all-in-one infrastructure monitoring solution designed to track the health and performance of IT environments. The "21.0.x" designation represents a specific generational release cycle focused on strengthening the software's engine, improving security protocols, and streamlining database performance.
PRTG Network Monitor by Paessler is an all-in-one monitoring solution that tracks the health, performance, and uptime of IT infrastructures. Unlike modular competitors, PRTG provides all monitoring features within a single license, using a flexible, "sensor-based" licensing model. Understanding the Sensor Concept
Logs and configuration files are stored in C:\ProgramData\Paessler\PRTG Network Monitor .
