1

Start EcoStruxure Machine Expert.

2

Execute the command View > Security Screen to open the Security Screen editor.

3

In the User tab, click the  button from the Project file decryption area.

Result: The Certificate Selection dialog box is displayed.

4

From the Available certificates in the local Windows Certificate Store section, select the certificate with a private key that corresponds to one of the certificates with public key the project has been encrypted with.

5

Click the button.

Result: The certificate you selected is added to the list of certificates for decrypting project files in the upper part of the dialog box.

6

Click OK to confirm.

Result: The Certificate Selection dialog box is closed and the selected certificate is displayed in the Project file decryption section of the User tab of the Security Screen editor.