IE prompt certificate error solution in Vista system

        Using IE7 to access https sites under Windows Vista sometimes suddenly displays the error message "There is a problem with the security certificate of this site....". How should I solve this problem?
Solution
1. Open the IE7 browser and click on "Tools" --> "Internet Options" --> "Content" tab.

Figure 1
2, click the "Certificate" option, the following dialog box appears.

Figure 2
3. Click “Trusted Root Certification Authority” when you want to install the certificate type. Then click the “Import” button in the lower left corner to import the relevant certificate.