I notice you’re asking about AnyDesk 542 with the word "full" — this often suggests looking for a cracked, premium, or "full version" unlock.

Version Incompatibility: If one user is on a very old version and the other is on the newest, they may fail to connect. Jobs at AnyDesk – Careers

Download: Visit the official site and download the executable file. You can run it immediately without installation, or choose to install it for long-term use.

Download Link: [insert download link]

No Registration Required: Unlike the latest versions (7.1 and above), which may prompt for account registration to remove pop-ups, older versions often allow for more straightforward, registration-free personal use.

. While it remains functional for some users with older hardware or specific OS requirements, modern users generally look for the "full" version to unlock professional features like unattended access session recording address book management. The Legend of AnyDesk 5.4.2: Why It Still Matters

AnyDesk 5.4.2 Full is a powerful and feature-rich remote desktop software that is designed to meet the needs of individuals and businesses. With its fast and secure connection, remote desktop access, file transfer, and session recording features, AnyDesk is an ideal solution for remote work, IT support, and collaboration. The latest version of AnyDesk, version 5.4.2, offers improved performance, enhanced security, and a new user interface, making it a must-have for anyone who needs to access remote devices.

Searching for "full" versions of software (often implying "cracked" or "pre-activated" software) is a high-risk activity: 

is a legacy version of the remote desktop software, originally released in December 2019