To Recover From an Attack by Malicious Code

If your installation has already been impacted by a malicious application or routine that runs on startup, following these general steps:

1. Run your anti-virus checker. All leading anti-virus solutions identify and repair AutoCAD virus infections.
2. Start your AutoCAD-based product using the /safemode command line switch.
3. Find and remove all malicious code. This process is made more difficult if you had been running as an Administrator with User Account Control (UAC) turned off. As a result your AutoCAD install folder might be compromised as well.
4. Repair any affected files.
5. Set the SECURELOAD system variable to 1 or 2.
6. Set the TRUSTEDPATHS system variable to unique, read-only folders.
7. Remove the /safemode command line switch from the command line parameters.