Are you seeing this error specifically during , activation , or while saving a drawing ?

: If you are using a patcher or utility, ensure it is located on your primary system drive (typically

To avoid these issues, follow these steps to ensure that you can write to the current directory in AutoCAD 2013:

AutoCAD often writes to the project folder or its own installation directory. where you are saving the file. Right-click the folder and select Properties . Uncheck Read-only at the bottom.