① You can open the CAD drawing or CAD first. ② Click the right mouse button in the blank to pop up a shortcut dialog box, and click the option. ③ Enter Options: In the main interface of the dialog box, click System Options in the main menu bar to enter the System Settings dialog box. ④ Under the system column, click the executable file location in the lower right corner.

⑤ In the Executable Location dialog box, under the Safe Load column, click the first "Load from all locations without warning", and then click OK. ⑥ Return to the "Options" main interface, click "Apply" first, and then click "OK" to close the options dialog box. The invisible steps of cad electronic signature are as follows: 1. The simple way is to make the name and seal into a CAD file and insert it directly when necessary. 2. Use professional electronic signature software. This kind of software is directly loaded into CAD, and the function is directly called when signing. 3. After signing, the drawings will be safely protected. If someone changes it, the signature will be automatically blocked, indicating that there is no signature.