Your "license key" is only required for paid tiers. The free version works indefinitely without any key entry.
For more specific details on procurement, you can visit the Paessler PRTG Pricing Page . Setup | Enter License Key - PRTG Network Monitor (PRTG) prtg network monitor license key
. This is suitable for small networks or home labs with roughly 10–20 devices. Commercial Subscriptions Your "license key" is only required for paid tiers
: Modern keys, particularly "version two" keys, streamline the activation process by allowing users to update their credentials directly via the PRTG web interface under the "License Information" settings. Operational and Ethical Importance Setup | Enter License Key - PRTG Network Monitor (PRTG)
for 30 days. Once the trial expires, the software automatically reverts to the Freeware Edition. Freeware Edition : Completely free for life, supporting up to 100 sensors
Use PRTG’s "sensor factory" and "library" features to monitor multiple similar devices with fewer sensors. For example, you can monitor 10 Linux servers’ disk usage using a single "SSH Linux Disk Free" sensor template with auto-discovery.