Autocad - Internal Error 2602

Many users report Error 2602 occurs immediately after using the HATCH command. This is a classic symptom.

Internal Error 2602 is generally classified as an Unhandled Exception or an Access Violation. In plain English, this means AutoCAD attempted to perform an action (like reading a block definition, loading a DLL file, or saving geometry) but the operating system said "No."

The error is often tied to:

AutoCAD is the industry standard for computer-aided design (CAD), but even its most robust versions (including AutoCAD 2025, 2024, and LT) are prone to cryptic errors. One of the most frustrating and least documented issues is the Internal Error 2602.

If you have ever been in the middle of a critical deadline and suddenly seen the message: "Internal Error 2602. \nUnhandled Access Violation Reading 0x0000 Exception at 7bc3a98h" – you know the panic. This error typically causes an immediate crash, loss of unsaved work, and corruption of your drawing file. internal error 2602 autocad

This long-form guide explains exactly what Internal Error 2602 is, why it happens, and step-by-step solutions to fix it for good.

If the error persists, use the DXF swap: Many users report Error 2602 occurs immediately after

Internal Error 2602 typically appears when:

The full error often reads:

Internal Error 2602. … Contact Autodesk Support.

Before jumping into fixes, understand the root cause. Internal Error 2602 is usually triggered by one of five culprits: AutoCAD is the industry standard for computer-aided design