Keep the Master Host File for DesignCenter. Only use WBLOCK to "export" a standalone copy.
To fully isolate AutoCAD, several categories of domains should be redirected in the hosts file: genuine-software.autodesk.com genuine-software2.autodesk.com validation.autodesk.com Analytics & Data Collection: clm.autodesk.com dpm.autodesk.com autocad block host file full