This is the most frequent cause. Without administrator privileges, the keygen cannot modify the AutoCAD registry or system files. Right-click the file. Select "Run as administrator."
Using the wrong version of the activation tool causes immediate memory allocation failures. Xforce Keygen Autocad 2013 Error Access Violationl
: Corrupted user profiles or local settings can trigger memory conflicts. Use the Reset Settings to Default utility found in the AutoCAD folder within your Windows Start menu. This is the most frequent cause