If you are sure your details are correct but can't log in, check the following:
Understanding Xdiag Pro 3: Your Guide to Usernames and Passwords
Always keep a backup of your original EOBD and LICENSE.DAT files. These are unique to your S/N and are required to make the software work with your specific connector.
Most users obtain their login credentials by contacting an Xdiag reseller or "master" dealer. You provide your device's S/N, and they create an account on the Xdiag server for you.
If you are a car enthusiast or a professional mechanic using the Launch X431 platform, you have likely encountered . It is one of the most powerful third-party software solutions for automotive diagnostics, turning a standard Android tablet into a professional-grade scanning tool.
Unlike public apps, you cannot simply "sign up" for Xdiag on a standard website. Access is tied to the of your hardware connector.
Xdiag Pro 3 is a modified software version designed to work with Launch diagnostic connectors (like the EasyDiag 2.0, 3.0, or Golo). It provides access to "Full Software" packages, allowing you to perform advanced functions like coding, adaptations, and bi-directional tests that are usually reserved for expensive dealership tools. How to Get an Xdiag Pro 3 Username and Password
