Lack of administrative privileges or interference from antivirus software and User Account Control (UAC).
C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing .
If the error occurs with a specific drawing, focus your efforts there. AutoCAD has built-in tools for this exact purpose.
Last updated: Based on AutoCAD 2024–2026 behavior. Commands apply to all versions from 2015 onward. internal error 2602 autocad high quality
If you can open the file but the error appears during editing:
Internal Error 2602 typically manifests during an update or deployment process, often accompanied by a message referencing a specific DLL file (e.g., __gGeometry.dll... ) or a registry key, as seen in this Autodesk Community post.
Prepare the following before opening a support case: AutoCAD has built-in tools for this exact purpose
Unlike generic Windows crashes, Internal Error 2602 is specific to AutoCAD’s database handler ( acdb ). The file path in the error ( acdbmpolygon.cpp ) points to a problem with .
While AutoCAD does not publicly document specific internal error codes in great detail, Error 2602 is generally attributed to the following factors:
Select or Uninstalling , depending on when you encountered the error. If you can open the file but the
in AutoCAD typically occurs when the software attempts to access a corrupted or invalid ObjectARX application , a damaged drawing database, or a failed graphics operation. It often appears during startup, opening a specific drawing, or when running a custom LISP/ARX routine. The error is distinct from fatal exceptions (e.g., Unhandled Access Violation ) because it usually points to a managed application interface failure.
The most frequent cause, where the licensing components are damaged or outdated.
AutoCAD is the industry standard for computer-aided design, but sudden installation or runtime errors can halt your entire workflow. One of the most frustrating issues users encounter is .