Download the official Microsoft Program Install and Uninstall Troubleshooter. Run the tool and check for any hidden, orphaned Autodesk registry remnants to clear them.
| Marketing Name | Internal Release Name | env.acad variable value | | :--- | :--- | :--- | | AutoCAD 2020 | 23.1 | R23.1 or 2020 | | AutoCAD 2021 | 24.0 | R24.0 or 2021 | | AutoCAD 2022 | 24.1 | R24.1 or 2022 | | AutoCAD 2023 | 24.2 | R24.2 or 2023 | | AutoCAD 2024 | 24.3 | R24.3 or 2024 | | AutoCAD 2025 | 25.0 | R25.0 or 2025 | autodesk autocad --env.acad release name-