Other Autodesk services (like the Licensing Service) running in the background while an update is attempted. Corrupt Installation Media: A partial download of the AutoCAD installer. How to Fix Internal Error 2602 1. Run as Administrator & Clear Temp Files

Now, we move from diagnosis to action. Your solution depends entirely on when the error occurs. Use this matrix to deploy the correct fix.

If you suspect the corruption is tied to a specific element or a corrupted external reference (XRef), use this surgical approach:

Delete all files inside this folder. AutoCAD will safely regenerate clean cache files upon the next launch. 4. Reset AutoCAD to Default Settings

If the error is with the software itself, focus on these areas.

Navigate to C:\Program Files (x86)\Common Files\Autodesk Shared\AdskLicensing . Right-click uninstall.exe and select .

The Internal Error 2602 is a generic, catch-all error code that surfaces when the core functionality of an Autodesk program is disrupted. It is most frequently associated with AutoCAD but can appear across the entire Autodesk product suite, including .

| Cause Category | Specific Trigger | Likelihood | |----------------|----------------|-------------| | | Corrupt entity handles, orphaned dictionary entries, or damaged block definitions. | High (65%) | | Graphics Driver Conflict | Outdated or incompatible GPU drivers causing memory pointer errors during regeneration. | Medium (15%) | | Custom Object Issues | Third-party ARX, .NET, or LISP applications writing invalid object data. | Medium (10%) | | File Translation Glitch | Corrupted during import from DXF, DGN, or older DWG versions. | Medium (5%) | | Hardware/Memory Fault | Faulty RAM or insufficient virtual memory addressing. | Low (5%) |

Security software misidentifies installation files as threats and quarantines them. Step-by-Step Solutions to Fix Internal Error 2602

If the Windows Installer engine itself is malfunctioning, re-registering it via the Command Prompt can resolve the 2602 data table mismatch. Type in the Windows search bar. Right-click Command Prompt and select Run as Administrator .

Download the . Run the tool and select "Uninstalling."