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# License types

The following licenses are available:

License | Description
--- | ---
Perpetual license | The perpetual license authorizes to use the product indefinitely with the payment of a single fee. The license is bound to a device and never expires. No internet connection required.
Temporary license | The temporary license expires after a fixed number of days following its activation. No internet connection required.
Online license | The online license requires a regular internet connection to work. A mechanism allows the software to run offline during a grace period (generally 30 days).

Note

Temporary licenses may be extended on request. Please contact our sales department for a license extension.

## Dongle license

For Windows applications, a license can be installed on a standard USB key.

Warning

A dongle license is linked to the serial number of the USB key, so once a license is installed on that particular dongle, it cannot be transferred to another dongle.