Please check that the URL is correct and refresh the page. Confirm whether your network security software has blocked the connection of this website, and if necessary, you can modify the settings or close it. If you are sure that the website is trustworthy, you can try to add security exceptions manually to continue visiting the website.

An easy way to solve this problem is to try to clear the browser's cache and Cookie, and then reload the page. You can also try to access it with other browsers or devices to see if the same problem exists. If the problem persists, please check your network settings to ensure that your device is properly connected to the Internet.

This situation is generally a problem of network connection. It is recommended to restart the router or reconnect WIFI. If it is traffic, check whether the mobile phone is in arrears and whether the mobile network settings are correct. If the network problem is eliminated, it is possible that the web server you want to open is broken. You can try again later.

Turn on the computer, and then click Open IE Browser. Click the "Settings" icon in the upper right corner of the browser. Then click "Internet Options". In Security, click Internet, and then click Custom Level.

Safari can't establish a secure connection due to network problems and needs to try to restore network settings. Safari has too many caches. Try cleaning up safari cache. The mobile phone time is wrong. Adjust the phone time before opening safari. Try to restart the phone.