QCC typically stands for Qualcomm Compiled Code (or refers to the Qualcomm Compute environment). It relates to the proprietary tools used to flash firmware, diagnose hardware, or configure Qualcomm processors. Tools like QPST (Qualcomm Product Support Tools), QFIL, or specific manufacturer service tools rely on valid authentication to function. These tools check for a license to ensure the user is authorized to make low-level changes to the device.
Scenario: User runs fluent 3ddp -t4 on a cluster node.
Error: qcc license check failed
Diagnosis: Compute node cannot reach license server because firewall blocks outgoing port 1055.
Resolution:
# Check if qcc is in PATH
which qcc
The license server might be visible to Windows Explorer but blocked by the software. qcc license check failed
| Cause | Solution |
|-------|----------|
| Missing license file | Copy valid .lic file to C:\Qualcomm\Licenses\ |
| Expired license | Request new license from Qualcomm support |
| Wrong environment variable | Set LM_LICENSE_FILE=1717@license_server or path to local file |
| Host ID mismatch | Regenerate license with correct MAC address / hostname |
| Firewall blocking | Allow inbound/outbound on license server port |
| Corrupted license | Re-download license file and restart tools |
Example (Windows – local license):
set LM_LICENSE_FILE=C:\Qualcomm\Licenses\qcc_license.dat
Example (floating license):
set LM_LICENSE_FILE=27009@myserver.qualcomm.com
Before attempting a fix, you must identify why the license server rejected you. Below are the seven most common causes of the "QCC License Check Failed" error. QCC typically stands for Qualcomm Compiled Code (or
Check file permissions:
Check system time:
View logs: open the tool’s log file (path varies by product); search for "license", "qcc", or error codes.
This is the #1 cause. If your license server is a physical USB dongle (Sentinel HASP) or a network service, and that service isn't running, the check fails instantly. Symptoms: The error appears immediately upon launch.