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Licence Management (licence)

The licence command manages your OPC UA Modeler activation. Use it to activate, check, or deactivate your licence.

Checking your licence status​

opcua-modeler licence

Displays your current activation status, the licence type, expiry date (if applicable), and the machine it is bound to.

Activating a licence​

opcua-modeler licence activate

You will be prompted to enter your licence key. The tool contacts the Sterfive licence server to validate and register your activation.

Requirements: internet connection + your licence key (received by email after purchase).

Licences can be purchased at https://www.sterfive.com/shop/opcua-modeler/.

Deactivating a licence​

To move your licence to a different machine, deactivate it first on the current one:

opcua-modeler licence deactivate

This releases the activation slot so you can activate on another machine. An internet connection is required.

Offline activation​

For air-gapped environments (no internet access), use offline activation:

# Step 1 — generate an offline activation request file
opcua-modeler licence activate --offline

# This produces a request file: activation-request.json
# Send this file to support@sterfive.com

# Step 2 — once you receive the response file, apply it:
opcua-modeler licence activate --offline --response activation-response.json

Telemetry​

opcua-modeler collects anonymous usage telemetry to help improve the product. Only command names, OS type, and CLI version are sent — no file contents, model data, or personally identifiable information is ever collected.

Opting out​

Set either of these environment variables before running any command:

# Option A
set STERFIVE_DISABLE_TELEMETRY=1

# Option B (standard Do Not Track signal)
set DO_NOT_TRACK=1

To make this permanent, add the variable to your shell profile or system environment.

Troubleshooting​

Licence error: network unreachable The licence server at licence.sterfive.com could not be reached. Check your internet connection or corporate proxy settings. If you are behind a strict firewall, use offline activation.

Licence error: maximum activations reached Deactivate the licence on one of your existing machines first, then activate on the new one. Contact support@sterfive.com if you need to reset activations.