Internal Error 2602 Autocad High Quality May 2026

Exploring “Internal Error 2602” in AutoCAD (High Quality)

What this post covers

• What “Internal Error 2602” typically means
• Common causes and triggers
• Step-by-step troubleshooting (from safest to more advanced)
• Preventive measures and best practices
• When to escalate and what info to gather

1. Set FACETRES to 0.5 (Default is 0.5; high values like 10 will trigger the error).
2. Set VIEWRES to Y then 2000 (not too high).
3. Set WHIPTHREAD to 3 (Enables multi-threaded regeneration to bypass single corrupt thread).
4. Turn off Hardware Acceleration (Command: GRAPHICSCONFIG → Uncheck Hardware Acceleration). This forces the CPU to interpret the MPolygon polygonally rather than the GPU trying to tessellate it into a high-quality mesh.

2. Primary Causes of Error 2602

Based on Autodesk’s internal knowledge base and field diagnostics, the leading causes are:

# 3. Rebuild handle mapping without purging handle_table = db.reconstruct_handles(skip_orphaned=True)

Corrupted Licensing Service: The Autodesk Desktop Licensing Service may be damaged or outdated, preventing the installer from validating the software. internal error 2602 autocad high quality

Step 2.2: The "ActiveX" & "ARX" Check Expand your current profile. Look for two keys: Dialogs and LoadAcadLspIn. What “Internal Error 2602” typically means Common causes

Delete leftover folders in C:\Program Files\Autodesk and C:\ProgramData\Autodesk. Restart your computer. Set FACETRES to 0

Corrupt Windows Registry: Orphaned registry keys from previous failed installations.

Error 2602 is frequently linked to outdated or corrupted Microsoft .NET Framework components.