Open a command prompt on the license server (or from client if LMTOOLS installed) and run:
The License Manager Administrator keeps a log file. Default location: Open a command prompt on the license server
The error message “An ArcGIS Pro Advanced Concurrent Use license is not authorized” represents a critical failure in the license brokering chain between the ArcGIS Pro client, the License Manager (ArcGIS License Manager 202x), and the Esri authorization servers. In enterprise environments, this error halts productivity for GIS professionals who rely on shared, floating license pools. This paper provides a systematic diagnostic taxonomy, root cause analysis, and remediation protocol. It addresses licensing architecture, common failure modes (network, version mismatch, feature code absence, license borrowing corruption), and preventive monitoring strategies. This paper provides a systematic diagnostic taxonomy, root
The error “An ArcGIS Pro Advanced Concurrent Use license is not authorized” occurs exclusively within the concurrent use workflow. Unlike a “no licenses available” error (resource exhaustion), the “not authorized” error indicates that the License Manager does not recognize the client’s request as valid for the specific product level. This paper argues that the error is rarely a true authorization failure from Esri, but rather a local misconfiguration in the license file, version compatibility, or client connection parameters. root cause analysis
REM Force license re-read (on LM server) lmutil lmreread -c service.txt -all
environment variable is set on the client machine to prevent premature timeouts. Summary Checklist for "Not Authorized" Potential Cause Wrong Manager Name 27000@server in Licensing Options. Service Stopped Start service in License Server Administrator. Expired License Re-authorize in License Server Administrator. Wrong License Level Select "Advanced" in Pro > Licensing. Firewall Block Open ports 27000–27009.
REM Clear borrowing cache (client) del /s /q "%AppData%\Local\ESRI\License*.*"