"License Error" in AutoCAD, Revit, and Civil 3D (Service Stopped)
Quick diagnosis: Understanding the error
The
"Background service validation error" message in Autodesk products like AutoCAD, Revit, or Civil 3D occurs when the
Autodesk Desktop Licensing Service (ADL) fails to start. This local service, located at
C:Program Files (x86)Common FilesAutodesk SharedAdskLicensing, manages license verification and can become blocked after:
- Windows updates that modify permissions.
- Corruption of DLL files in the
AdskLicensing folder. - Conflicts with antivirus software that blocks TCP port 2080 (used by ADL).
According to
official documentation, the error typically displays codes such as
1.5.0 or
4.0.0 in the pop-up window.
Step by step: Restarting the licensing service
1. Access Windows Services
Run
services.msc from the Windows search box and locate
"Autodesk Desktop Licensing Service".
2. Restart the process
- Right-click the service and select "Stop".
- Wait 10 seconds and turn it back on with "Start".
- Change the "Startup type" to Automatic in Properties.
3. Reinstall the licensing component
If the problem persists:
- Navigate to
C:Program Files (x86)Common FilesAutodesk SharedAdskLicensing. - Run uninstall.exe as administrator.
- Download the latest installer from the official site.
Final verification: Manually registering the software
For extreme cases, use the Command Prompt (CMD) as administrator:
cd "C:Program Files (x86)Common FilesAutodesk SharedAdskLicensingCurrenthelper"
AdskLicensingInstHelper register -pk -pv <año_de_versión> -el EN
Replace
clave_de_producto and
año_de_versión according to your software. For example, AutoCAD 2024 uses
001M1 and
2024.0.0.F.
Frequently Asked Questions (FAQs)
Why does the error appear after updating Windows?
Windows Update can reset permissions on critical folders or change firewall settings, blocking port 2080 used by ADL.
How can I check if the service is running?
Run
tasklist /FI "IMAGENAME eq AdskLicensingService.exe" in CMD. If it returns no results, the service is down.
Do I need to completely uninstall Autodesk to fix this?
Not necessary. According to
Autodesk, reinstalling only the licensing module is usually enough.
