Strict Windows User Account Control (UAC) settings often block the software from writing to the C:\Program Files or C:\ProgramData directories.

When the error is tied to a particular file or action, the drawing is likely the culprit. Use these techniques in order:

Note: Remember to re-enable your antivirus and restore UAC settings once the installation succeeds. Method 5: Run a Clean Autodesk Reinstallation

Disconnect your computer from the internet (for security during this step).

To ensure AutoCAD remains stable moving forward, implement these system habits:

A previous installation or failed update left residual files that conflict with the new deployment.

(if available) to strip all AEC and proxy objects.

: Avoid the "Install Now" option, which often fails due to network interruptions. Instead, use the Browser Download method to get the full application package.

: Get the newest Autodesk Licensing Service from your Autodesk Account.

flowchart TD A[Internal Error 2602 Occurs] --> BWhere Does Error Happen? B -->|During Installation/Deployment| C[Network Installation Path] B -->|When Opening or Working on a File| D[Active Work Session Path]

Unlike generic AutoCAD crashes, is notorious for being: