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Q100285: Troubleshooting login-based Licensing


This article explains the steps to go through if you encounter any problems with your login-based licensing for Nuke Indie, Modo Maintenance, Modo Subscription or Mari Individual Subscription.



Most issues with login-based licensing can be resolved by logging out, clearing out any local files then logging in again. You can do this via these steps:


1. Deactivate any existing sessions

If you are having issues licensing your login based software we would suggest deactivating any sessions that are currently active through our website via these steps:
  1. Log in to the website and navigate to Here you will see your entitlements like the example below:

  2. Click on the product name, in this case "Modo" to see the details of your subscription and then click on the string of ​​hexadecimal characters under the "License currently activate by" section as highlighted in the image below:​​
  3. Click on "Deactivate Entitlement" under the Activated Products section to remove the license from that machine.  If you click on "Deactivate Device" then all login-based licenses will be removed from the machine.

    Note: If you are running Modo 15 and above, the page will instead display a “Release license” button under the product information. Further details can be found at:  Q100607: How to de-activate a login-based license for Modo


2. Remove the local license

To ensure that the licence has been fully removed from your machine please delete the FoundryLicensing folder in your home area.  The default location for this is:

Windows C:\Users\<USERNAME>\FoundryLicensing\
OSX: /Users/<USERNAME>/FoundryLicensing/
Linux: /Users/<USERNAME>/FoundryLicensing/

For Modo 15 and above, please also remove the highlighted Tokens folder:

Windows: C:\Users\<USERNAME>\AppData\Local\Foundry\Tokens
OSX: /Users/<USERNAME>/Library/ApplicationSupport/Foundry/Tokens
Linux: $HOME/.local/share/Foundry/Tokens


3.  Activate your login licence on your machine

Once the licence has been cleared from your machine you should be able to log in again via these steps:

  1. Launch your software
  2. Enter your Foundry website account details
  3. Select the login based licence you wish to install (if needed)


This should then allow you to use your licence but if you encounter any further issues please try the following:


Check your license usage

If you are unable to activate your login-based license then the first thing to do is check your account on our website and see if the license is in use.  You can do this by logging into the website and navigating to

Please see Q100286: How to manage your Login-based licenses for more information on how to navigate this page and manage your license.



Check the network settings on your machine

After installing the login-based licence on your machine you do not need to be connected to the internet to use this. However, you will need to have an active network device, if you disconnect any network devices this can cause issues. 

Login based licensing works by installing a rolling temporary licence on your machine. This licence is locked to the system ID of your machine. The System ID is the primary MAC address of the machine, in practice this would be the ethernet ID that is provided by your primary network port, as long as this network port remains active it should be providing a stable System ID for your licence to run off.

Reactivating the network or wifi card will make the license valid again. 

More information on this can be found here: Q100477: How to fix the "The license string has an incorrect System ID" error message for Login-based licensing 


Raise a Support Ticket

If you run into any further problems then please raise a support ticket via the Support Portal by clicking on the "Create a Ticket" link (note this will appear once you are logged in to the Foundry website). Please include the following when raising the ticket:

  • Description of the problem your facing including the steps you have tried
  • Screenshots of any error messages you get when trying to activate your license
  • A diagnostic output file from the Foundry License Utility (FLU) for the machine you are trying to activate your license on.  Instructions on how to generate this are in Q100105: How to generate a License Diagnostic file



More information about Modo Subscription and Modo Maintenance is available at the following link:

More information about Mari Individual Subscription is available at:

More information about Nuke Indie is available at: 

More information about login-based licensing is available in the following articles:

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