This error can happen if you have a corrupted installation of an Autodesk program or if the License model has been changed in the registry. In most cases a clean uninstall and reinstall should correct the issue. However if this issue is not resolved then delete the licensing files and reactivate the product.
Most of the time, a clean uninstall and reinstall of CAD will resolve this issue.
First, follow our steps to uninstall AutoCAD or F/X CAD.
You can then reinstall AutoCAD or F/X CAD from scratch.
Still Getting the Error Message?
If uninstalling and reinstalling don’t resolve the issue, you might need to uninstall again and delete the following files before the reinstallation: