The primary way to obtain a genuine activation key for is through the official GetData website . While version 6.4.2 is an older release, the developer still maintains its download page for users with existing licenses. How to Get a Recover My Files Activation Key
If you absolutely cannot pay, there are alternatives to Recover My Files v6.4.2. These tools do not require any activation key:
For users, an activation key converts a trial or restricted installation into a fully functional product, unlocking features such as deep sector scanning, file preview, or sustained technical support. In data recovery, those extra features can mean the difference between restoring critical documents and losing them forever.