Run the following command: "C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing\Current\helper\AdskLicensingInstHelper.exe" list
This is the most common "hot" fix for the 2100 error code when updating or launching specific versions like Revit 2021: Блог Вадима Муратова , and press Enter. Navigate to: autodesk license status 2100 hot