Navigate to the following directories and delete any folders named or AutoCAD : C:\Program Files\Autodesk C:\Program Files (x86)\Autodesk
Understanding the root cause of this error makes it much easier to select the correct troubleshooting workflow: AutoCAD 2019 1.2 Update Error Message - Forums, Autodesk
Important: Re-enable your antivirus immediately after the installation completes. 5. Re-register the Windows Installer Engine
| Cause | Explanation | |-------|-------------| | | Most common — damaged database objects (dictionary, orphaned entities) | | Corrupt or missing font | Shape file ( .shx ) or TrueType font issues | | Third-party add-on | Custom ARX/LISP/VBA crashing AutoCAD’s internal structure | | Registry corruption | AutoCAD installation or profile keys damaged | | Permission problem | Cannot write to temp folder or drawing location | | Hardware acceleration | Graphics driver or DirectX conflicts | | Profile/Workspace corruption | Corrupt .aws or .arg file |
Instead of using the "Install Now" method, sign in to your Autodesk Account and use the Browser Download option to get the full installation package.
“Internal Error 2602. [filename.dwg] encountered an internal error. It is recommended that you recover the drawing.”
Windows does not have sufficient rights to write to the C:\Windows\Installer or C:\Program Files directories.
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Aggressive security software is falsely identifying a critical AutoCAD installation file as a threat and putting it in quarantine.
To ensure you do not encounter Internal Error 2602 during future AutoCAD deployments, follow these best practices: Always log into Windows using a full .
