Use the “License Manager” tool to deactivate the hardlock (if network license) or simply move the USB dongle. For disk serial-based licenses, contact Siemens support for rehosting.
The primary source for any Siemens software is the website. However, note that:
Disclaimer: This article is for informational purposes only. Siemens, DIGSI, SIPROTEC, and SICAM are registered trademarks of Siemens AG. The author does not distribute copyrighted software. Always obey your organization’s software licensing policies.