Right-click the AutoCAD desktop icon, select Properties , go to the Compatibility tab, check Run this program as an administrator , and click Apply . Method 3: Re-register the Windows Installer Engine
| Severity | Medium/High (can block work) | |----------|-----------------------------| | Main cause | Drawing corruption or font issue | | Easiest fix | RECOVER or WBLOCK | | Worst case | Reinstall AutoCAD + delete user profile | internal error 2602 autocad
Accumulated temporary graphics data can cause memory conflicts that trigger internal errors. Close AutoCAD completely. Press Windows Key + R to open the Run dialogue box. Type %localappdata%\Autodesk and press . Right-click the AutoCAD desktop icon, select Properties ,
The downloaded installer package is incomplete, broken, or corrupted during the download process. Press Windows Key + R to open the Run dialogue box
After recovery, run these commands immediately:
Ensure you are using the latest version of AutoCAD. Autodesk regularly releases updates and patches to fix known issues, including Internal Error 2602.