Wolfram Computation Meets Knowledge

Where does Mathematica store its license information?

Mathematica stores its license information, consisting of the machine name, Machine ID, activation key and password, in a text file named “mathpass”.

You may need to locate your mathpass file in order to reset your Mathematica license by hand or look up any of the above licensing details.

Looking Up Licensing Information from Within Mathematica

Evaluate FilePrint[$PasswordFile] to obtain the content of the mathpass file that this instance of Mathematica is referencing.

Where to Find the Mathpass File

In your respective operating system, please open your mathpass file using a basic text editor.


The mathpass file is at one of the three following locations:

  • C:\ProgramData\Mathematica\Licensing\mathpass
  • C:\Users\<user>\AppData\Roaming\Mathematica\Licensing\mathpass
  • C:\Program Files\Wolfram Research\Mathematica\Configuration\Licensing\mathpass

where <user> is your username on the computer.

You may need to adjust a setting to show hidden files.


The mathpass file is located at one of the following locations:

  • /Library/Mathematica/Licensing/mathpass
  • ~/Library/Mathematica/Licensing/mathpass

These files may be hidden on your computer. To navigate to a hidden folder, open the Finder application. Press Command + Shift + G to open a file search dialog and enter “~/Library/Mathematica/”. Finder opens the hidden folder.


The mathpass file is located at one of the following locations:

  • /usr/share/Mathematica/Licensing/mathpass
  • ~/.Mathematica/Licensing/mathpass
  • /usr/local/Wolfram/Mathematica/Configuration/Licensing/mathpass

On Linux you may need to show hidden files using Control + H.

Is this article helpful?

Any comments?

Thank you for your feedback.


Contact Support

Whether you have a question about billing, activation or something more technical, we are ready to help you.

1-800-WOLFRAM (+1-217-398-0700 for international callers)

Customer Support

8am–5pm US Central Time

  • Product registration or activation
  • Pre-sales information and ordering
  • Help with installation and first launch

Advanced Technical Support (for eligible customers)

8am–5pm US Central Time

8:30–10am & 11am–5pm US Central Time

  • Priority technical support
  • Product assistance from Wolfram experts
  • Help with Wolfram Language programming
  • Advanced installation support