Use this script:
https://technologic.giacomogiorgini.com/wp-content/uploads/2025/04/RustDesk_ID_Changer.7z
Old method:
Replace enc_id = ‘XYZ’ with id = ‘PDQ’ in:
C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\RustDesk\config\RustDesk.toml
C:\Users\USERNAME\AppData\Roaming\RustDesk\config\RustDesk.toml
Then reboot the system