# Stop all Autodesk services net stop "Autodesk Desktop Licensing Service" net stop "FlexNet Licensing Service 64"
Many users searching "acCnGen.exe full" are actually seeing a nested error: "Xref buffer full – AcCnGen.exe cannot resolve." i autocad debug error acngenexe full
The most effective solution for this specific error is to manually reset the installation service components: IMAGINiT Technologies Remove the current service Open Windows Explorer and navigate to C:\Program Files\Autodesk\AdODIS\V1 Right-click RemoveODIS.exe and select Run as administrator Wait for the uninstallation process to finish completely. Install a fresh version Download the latest AdODIS-installer.exe Autodesk website Right-click the downloaded file and select Run as administrator Retry AutoCAD installation # Stop all Autodesk services net stop "Autodesk