Prtg Network Monitor 21.0.x [updated] -

21.0.x

PRTG Network Monitor version was a major release cycle that focused on modernizing the user experience through the introduction of a new API and enhanced monitoring capabilities for cloud and hybrid environments [1, 3]. Key Features and Improvements

4. Acceptance Criteria (select examples)

Availability: 99.9% platform uptime (excluding scheduled maintenance).
Performance: UI list views load <2s for inventories up to 25,000 sensors; dashboard graphs render <3s.
Scalability: linear sensor scaling via remote probes; remote probe registration throughput ≥200 probes/hour.
Security: no plaintext credential storage; TLS 1.2+; configurable password complexity and 2FA for admin users.
Compliance: support for GDPR-relevant controls around data export and deletion.

Installation Steps (Typical for 21.0.x):

The datacenter hummed like a sleeping city. Racks of servers blinked their tiny taillights in synchronized patterns while the cooling system whispered through ducts. In the operations room, Mara sipped cold coffee and watched the dashboard on her monitor: PRTG Network Monitor 21.0.x — a neat grid of sensors, maps, and alarms that had become the nervous system of the company. prtg network monitor 21.0.x

HPE iLO Sensor: Native monitoring for HPE server hardware health (fan speed, temperature, power supply).
Docker Sensors: Native ability to monitor Docker containers, images, and engine statistics without complex configuration.
HTTP Advanced Sensor: Improvements to the HTTP sensor allowing for more complex web transaction monitoring.
PowerShell Sensors: Significant performance improvements in how PRTG executes PowerShell scripts, reducing load on the probe system.

The 21.x cycle saw a heavy focus on rewriting older sensors for better performance and reliability: Local Folder Sensor: Availability: 99

Web Interface

legacy archive

Since Paessler’s official site primarily offers the latest version (24.x as of 2025), older releases are in the :