I can recommend a secure, free alternative tailored exactly to your requirements. Share public link
Audits can result in steep fines for using unauthorized licenses.
Publicly shared license keys are quickly blacklisted by the developer. A key that works today will likely stop working tomorrow, freezing your access.
If you need to evaluate Radmin 3.5.2 for a specific project, Famatech provides a fully functional, 30-day free trial of Radmin Server. This allows you to test its capabilities safely without risking your system's security. Utilize Free Alternatives by Famatech
Are you setting up remote access for or for a business network ?
There is no such thing as a free, legitimate "Radmin 3.5.2 license key." The only way to obtain one is to purchase it directly from Famatech or an authorized reseller.
Cybercriminals package cracked software with Trojans, keyloggers, and ransomware. Once you run a keygen or patch, you could lose access to your own files or have your system used in a botnet.