Refer to Error: “Drawing file is not valid” when opening a file in AutoCAD if you receive the “Drawing file is not valid” error when opening the DWG file.Your drawing may show the message “Drawing file is not valid,” display a message about errors being found, hang or crash during the open process, or simply may not appear in AutoCAD after you have selected to open it (i.e., you open it but all you ever see is the default “Drawing1.dwg” or another file that you currently have open). If the drawing file (DWG) will not open at all:
Use the following guidelines and instructions to clean, repair, and recover your drawing.
