1, knowing what you said, first make sure that your certificate is correctly installed on the current computer. The specific viewing method is as follows.

Open any IE browser, click "Tools-Internet Options" in the menu to open a pop-up window, click the following figure to the "Content" tab, and then view it in turn.

Among them, the default issuer of ABC's certificate is the name of ABC. Please see if yours is available.

2. If you are sure that your certificate is installed correctly, please try to use the IE browser that comes with the system. I can also use it normally under the browser.

If you can't do it again, just ask me, or QQ 17206276 1,