Try to reinstall the certificate of the website to solve the problem of expired security certificate.

1. Press the Windows R key to open Run (the Window key is the key between Ctrl and Alt).

2. Enter mmc ? and click Confirm to open the console.

3. Click File-Add/Remove Snap-in Unit.

4. Select the certificate in the list on the left side of the pop-up window and click Add.

5. Select My User Account in the Certificate Management window and click Finish.

6. After there is a certificate in the list on the right, click Confirm.

7. Expand Certificates-Trusted Root Certification Authorities-Certificates, find the certificate that needs to be deleted in the list on the right, and delete it.

8. Reopen the website that requires a certificate. The website will prompt you to install the certificate. Click directly to view the certificate, click Install Certificate - Install to a trusted root certificate authority.