The downloaded installer package is incomplete, broken, or corrupted during the download process.

C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing Right-click uninstall.exe Run as administrator Download and install the latest Autodesk Licensing Service Create a New Admin Account

Ensure your Microsoft .NET Framework is up to date, as AutoCAD relies heavily on it for installation.

Leftover registry entries or folders from previous AutoCAD installations or failed updates can confuse the Windows Installer.

Recent operating system updates that alter standard .NET Framework or Microsoft Visual C++ Runtime behaviors. Step-by-Step Solutions to Fix Internal Error 2602

Outdated .NET Framework versions or missing Microsoft Visual C++ Redistributables can trigger this error. Step-by-Step Solutions to Fix Error 2602 1. Run the Installer as Administrator

| 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 |