Before you hit install, ensure your PC meets these standards: OS: Windows 10 or 8.1 (Windows 11 is also fully supported). Processor: 2.5–2.9 GHz minimum (3+ GHz recommended).
The “dlmsfx” installer ran fast—too fast. No license prompt. No serial number. Just a progress bar that filled in forty seconds, then a dialog box: autocad 2021 english win 64bit dlmsfx hot