How to restart the Sentinel License Manager
Open Task Manager using the shortcut
Ctrl+Shift+EscGo to the Services tab → see 1 in the image
Look for 'hasplms' (Sentinel LDK License Manager) in the list → see 2 in the image
Right-click on hasplms and select Restart (or Start if that’s available) → see 3 in the image
Wait a few seconds for the service to start.

What if 'hasplms' doesn’t appear in the list?
That usually means the Sentinel license software is not (properly) installed.
- Fully close Pythagoras
- Download the latest Sentinel Runtime (driver) here:
https://www.pythagoras.net/content/uploads/sites/2/cpt-downloads/HASPUserSetup.exe - Right-click the file and choose 'Run as administrator'
- After installation, restart your computer
hasplms service should now appear in Task Manager and start automatically.
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