Internal Error 2602 Autocad | High Quality

Report: Addressing "Internal Error 2602" in AutoCAD

Date: October 26, 2023 Subject: Troubleshooting Guide for AutoCAD Internal Error 2602 Status: High Priority / Workflow Interruption

7. User Interface Mock (High Quality)

[AutoCAD Internal Error 2602 Detected]
┌────────────────────────────────────────────────────────┐
│  Drawing: "Structural_Floor_R03.dwg" (Corrupted)      │
│  Severity: ████████░░ Level 4 / 5                      │
│  Root cause: Anonymous block "*U147" has broken handle│
│              reference to AcDbDictionary.              │
├────────────────────────────────────────────────────────┤
│  Repair Options:                                       │
│  ● Quick Fix (recommended)                             │
│  ○ Deep Regenerator (slower, but highest integrity)   │
│  ○ Forensic Extraction (last resort)                   │
├────────────────────────────────────────────────────────┤
│  [Preview Repaired Model]   [Run Repair]   [Cancel]   │
└────────────────────────────────────────────────────────┘

After repair:

✅ Repair completed in 4.2 seconds  
   - Fixed 2 orphaned handles  
   - Rebuilt anonymous block "*U147" → "FIXED_BLOCK_147"  
   - No data loss detected
▶ Run AUDIT now? [Yes] [No]

▶ Open drawing? [Yes] [No]
 internal error 2602 autocad high quality

Step 3: The Hardware & Page File Solution

If registry cleaning fails, Windows memory handling is your culprit. Error 2602 often appears on systems with less than 15% free hard drive space or a fragmented page file. Report: Addressing "Internal Error 2602" in AutoCAD Date:

Step 3.1: Reset the Page File

• Right-click This PC → Properties → Advanced System Settings → Performance (Settings) → Advanced → Virtual Memory (Change).
• Uncheck "Automatically manage paging file size."
• Select "No paging file" → Set → Reboot.
• Reboot again → Return to settings → Select "System managed size" → Set → Reboot again.

This forces Windows to create a brand new, contiguous page file, eliminating bad sector pointers that trigger Error 2602. After repair: ✅ Repair completed in 4

Step 3.2: Graphics Driver Rollback (Not Update) NVIDIA Studio drivers (versions 531.xx through 535.xx) are confirmed to cause Error 2602 on Quadro cards.

• Fix: Roll back to version 528.49 (December 2023) or 522.30 (October 2023).

Key Characteristics:

• Crash Type: Fatal unhandled exception.
• Affected Operations: Saving, plotting, opening a file, or running certain commands (AUDIT, PURGE, REGEN).
• Frequency: Intermittent but reproducible with specific drawings or actions.
• User Impact: Unsaved work loss, file inaccessibility, project delays.