Open Environment Variables via the Control Panel. Ensure QNX_CONFIGURATION or the vendor-specific license path variable points directly to the folder containing your license.
This is a silent killer. FlexNet licenses have a cryptographic timestamp. If your computer’s clock is off by more than 5 minutes (due to a dead CMOS battery or manual misconfiguration), the server interprets the request as a replay attack and returns "License check failed." qcc license check failed
If you generated the license while connected to a docking station or Ethernet, switching to Wi-Fi or turning on a corporate VPN can mask the primary MAC address, causing the check to fail. Disable your VPN or switch back to the original network adapter to test. 4. Restart the FlexNet / License Server Daemon Open Environment Variables via the Control Panel