Tektronix K1297-G20 - Manual (Page 49)

Getting Started
K1297-G20 Monitor User Manual 37
Updating Expired Licenses. The K1297-G20 Monitor software will not start
if a product license has expired. To help you avoid this situation, product
license information is available from the Licenses option in the Help Menu
in the Data Flow window. Product expiration warnings will also be
displayed after the system start for products that have licenses, which will
expire in 21 days or less.
If a license does expire however, you can use the normal K1297-G20
Monitor setup program to either uninstall the expired product or update the
license key file.