Log into your PRTG Network Monitor web console using an administrator account. Step 2: Navigate to Licensing Settings Go to in the top menu bar, and click on License . Step 3: Enter Your Credentials

If sensors show a "Not Licensed" status (often indicated by a blue icon), open in the PRTG interface. This usually occurs when the number of sensors created exceeds the license limit. PRTG automatically pauses new sensors when the limit is reached.

: Modern PRTG installations use "Version 2" keys, which simplify the process by removing the requirement for a specific "License Name," making it easier to manage across different environments. Licensing Tiers Overview Sensor Limit Trial Unlimited (30 days) Initial environment evaluation. Freeware 100 Sensors Personal use or very small networks. Commercial 500 to 10,000+ Professional IT infrastructure monitoring.

The licensing process is designed for quick deployment, but the "sensor" math requires some planning. Trial to Permanent Transition : When you download a trial from

If you own an older perpetual license, the key allows you to run the software indefinitely. However, you can only update to software versions released before your maintenance contract expired.

If you have purchased a legitimate key:

Mostly true, but and unlimited user accounts require a paid license. Also, support is limited.