The most common fix is to rebuild your deployment from scratch.
AutoCAD Internal Error 2602 is almost always caused by a broken or manipulated installer database. Downloading a complete installer via the "Download" or "Custom Install" method—while ensuring your antivirus doesn't disrupt file extraction—resolves the error in the vast majority of cases.
Other software applications may be conflicting with AutoCAD, causing Internal Error 2602. internal error 2602 autocad
Ensure you have at least twice the storage space available on your primary drive ( C: ) than the size of the installation package to accommodate temporary file extraction.
: Avoid the "Install Now" option, which often fails due to network interruptions. Instead, use the Browser Download method to get the full application package. The most common fix is to rebuild your
Now, let's break down the solutions in detail based on the scenario.
: Security software can sometimes "lock" the installation database. Disable your firewall or antivirus for 10 minutes and try the action again. Repair the Installation : Open Control Panel > Programs and Features . Find AutoCAD in the list. Select Uninstall/Change and then click Repair or Reinstall . Other software applications may be conflicting with AutoCAD,
The most reliable way to clear this error is to manually uninstall and then update the licensing component: