Alternatively, you can modify the MAC address through the registry. Navigate to HKLM\SYSTEM\CurrentControlSet\Control\Class\4d36e972-e325-11ce-bfc1-08002be10318 , find your network adapter by matching the DriverDesc value, and add or modify the NetworkAddress REG_SZ key.

Scroll through the property list and select or Locally Administered Address . Click the radio button next to the empty value field.

TeamViewer does not rely on a simple login or installation timestamp to manage its trials. It generates a unique Client ID based on deep system attributes to prevent users from simply reinstalling the app.

Sign in with your registered TeamViewer account credentials.