The central certificate store is used to manage the certificates. Here you can add, create and delete certificates.

In the certificate store toolbar you will find a number of buttons with the following functions:

Table Buttons in the toolbar for certificate management

Button

Function

This button opens a dialog that allows you to load an existing certificate file. Various file formats are supported (.der, .cer, .crt, .cert, .pem, .pfx, .p12). If you have a certificate with an unknown file extension, expand the file filter to "*.*" and try to open the file anyway. This works in most cases.

This button opens a dialog that lets you create a new certificate file.

This button lets you export a certificate to a file to register it for Windows or another application, e.g. on an OPC UA client. Multiple file formats are supported here as well.

Use this button to remove the selected certificate from the table.

Use this button to open a window with all detailed information about the selected certificate.

Use this button to designate the selected certificate as "trusted".

Use this button to designate the selected certificate as "not trusted". However, the certificate will still remain in the certificate store table. However, certificates that are not trusted are not available in the selection list for use in the corresponding configuration dialog.

With this button you can define whether a certificate can also be used for user authentication for OPC UA.

The commands always refer to the certificate selected in the table, which is indicated by an arrow on the left at the start of the line.