The PID helps identify the orphaned session. If that process no longer exists, you can safely recycle the license.
For professionals relying on Autodesk software like AutoCAD, Revit, or Inventor, encountering a licensing error can bring workflows to a screeching halt. A particularly frustrating issue is the "License Checkout Timed Out" error, which often presents alongside specific status codes, sometimes referred to in troubleshooting contexts as a 2100 hot status, indicating a critical failure in the software's ability to communicate with the license server or service.
It is frequently accompanied by a prompt asking the user to retry, save their work, or exit the application. Top Causes for License Error 2100 autodesk license status 2100 hot
Download the latest standalone and run it. Step 3: Clear the Local Authentication and Login Cache
For IT administrators and CAD managers looking to cool down the situation, the path to resolution requires a systematic approach. The PID helps identify the orphaned session
If AutoCAD or Revit crashes (or is force-closed via Task Manager), the license checkout session may not close properly. The server still considers the license hot , waiting for a heartbeat or release signal that never comes.
Sometimes, DNS poisoning causes the request to go to a phantom server. A particularly frustrating issue is the "License Checkout
Run lmutil lmstat -a -c @yourserver immediately. If you see "2100 Hot" on more than three features, stop all services, delete the .lck file (license lock file), and restart. That will cut the heat instantly.
Autodesk transitioned its modern software architecture (versions 2020 through 2026) to rely on a decoupled ecosystem of background services. If any part of this system fails, the 2100 error can occur. The most common causes include: