Problem:
Got the GDS2 V2025 software downloaded and installed for VXDIAG VCX FD GM scanner, when open software, it said no valid lease found. How to fix it?
Solution:
“No valid lease” error usually caused by missing patch.

VXDIAG Officail engineer did a Teamviewer and found his GDS2 patch was eaten by anti-virus program.
Disable anti-virus program, reinstall GDS2 software, it will be fine.