Which and year (e.g., AutoCAD 2024) are you using? Did this start after a Windows update ? Are you on a private or company network?
(e.g., AutoCAD, Revit) is giving this error?
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.
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: autodesk license status 2100 hot
"License Status 2100 Hot" serves as a stark reminder of the fragility of on-premise license management. While the code doesn't mean your server is literally on fire, it does mean your workflow is burning daylight. Proactive monitoring of the FlexNet server logs is the only way to ensure this "hot" status remains cool.
Corrupt local validation data often creates a loop where the system fails to recognize an active subscription. Clearing the cached state forces the program to request clean authentication data.
Ensure VPN connections are stable for remote workers. Which and year (e
Using an old version of LMTOOLS (FlexNet License Manager) with a new Autodesk product release often triggers status 2100. For example, running AutoCAD 2025 on an LMTOOLS 2018 version will fail.
The 2100 error code typically signifies that the Autodesk software cannot verify the license activation status through the . It is often triggered by:
Ensure a stable internet connection and disable any VPN. Temporarily turn off your firewall and security software to see if they are blocking the license check. If the error disappears, reconfigure your firewall to allow Autodesk software. The client cannot release it
A sudden loss of network (Wi-Fi disconnect, VPN timeout, switch failure) while the Autodesk product is running can leave a "zombie" license on the server. The client cannot release it, and the server marks it as hot.
Autodesk relies on modern framework modules to authenticate users. If any of these local components stall or go out of sync with Autodesk’s cloud verification servers, software initialization will fail.
A recent Autodesk update or Windows update has corrupted the licensing component. Step-by-Step Solutions to Fix License Status 2100
Train users to close Autodesk applications properly (File > Exit). Avoid killing processes unless absolutely necessary.
If your local system status flags an initialization error, ADLS might simply be stopped or corrupted. Press , type services.msc , and hit Enter . Scroll down to find the Autodesk Desktop Licensing Service .