How to solve IE browser can not open HTTPS?

A friend came to the information and asked: When opening the https page under IE9, "There is a problem with the security certificate of this website", click "Continue to browse this website (not recommended)", but can not always jump to the next Link, encountered such a problem, how can I directly access the https page? Look at the problem: 1, Windows7 system IE9VPN site (SSLVPN), can not open 2, the same SSLVPN, WindowsXPIE8 can open the Ranger suddenly thought of the previous paragraph of the company's internal mail, mentioned Microsoft's KB2661254 patch, to the effect: the patch on HTTPSSL The minimum key length of the certificate is limited. The certificate connection less than 1024 bits is no longer allowed. Some devices cannot log in using IE. Microsoft's description of KB2661254 is: After installing this update on a Windows system, keep your system up to date by increasing the minimum encryption level. After installing this update, you may need to restart your system. The Ranger searched on the search engine and found that some people (though not many) raised this question, and they were all raised after the release of KB2661254. There are reasons to think that this is almost always the problem. The solution is very simple. : Method 1: On the computer accessing the https page, uninstall the KB2661254 patch. (Recommended) Method 2: Upgrade the length of the SSL certificate to 1024 bits, and the device can be contacted by the manufacturer.