The Autodesk On-Demand Install Service (ODIS) might be corrupted or outdated.
If the error occurs during the final stages of installation, the licensing component is likely the culprit. AutoCAD 2019 1.2 Update Error Message - Forums, Autodesk internal error 2602 autocad
Security software may flag AutoCAD installation files as suspicious, preventing them from being written to the disk. The Autodesk On-Demand Install Service (ODIS) might be
The user account lacks the administrative rights needed to modify system folders or registry keys. internal error 2602 autocad