
The steps below are to rollback your Autodesk Licensing Service to a previous version. The Autodesk Network License Manager (LMTOOLS) is now upgraded to the latest version. Go to the Start/Stop/Reread tab and select Start Server.Default location is C:\Autodesk\Network license manager. Select "Browse" next to "Path to the lmgrd.exe" and select the lmgrd.exe. Open LMTOOLS and go to the Config Services tab.
Download and install the latest version of LMTOOLS from the link below. Select Autodesk Network License Manager and Uninstall. Open Control Panel>Programs and Features>Uninstall a program. Open LMTOOLS and go to the Start/Stop/Reread tab to select the "Force server shutdown" box and then select Stop Server. Either upgrade the version of LMTOOLS to the latest v11.18 or rollback the latest Autodesk Licensing Service version by uninstalling the latest version and installing an older version. There are two methods to resolve the problem. Check your version of LMTOOLS by launching the program and going to Help>About. The error does not occur with the updated v11.18 version depicted in the image below. LMTOOLS needs to be v11.18 or this issue will occur. This issue effect Autodesk 2020 and newer software. As shown in the image below, the Network Licensing Manager (LMTOOLS) needs to be upgraded to v11.18 if the Autodesk Licensing Service 12.2.0.17 is installed on user computers.
The problem is caused by a new version of the Autodesk License Service and incompatibility with the version of the Autodesk Network License Manager (LMTOOLS) on the server.
Both will state “An incompatible version of the Autodesk network license manager is installed on the server.” See the examples below After installing the latest Autodesk Licensing Service 12.2.0.17, your Autodesk applications utilizing a Multi-user (Network) license experience a licensing error.