The specific method is as follows:
1. First open your own IE browser in win8 system, and then click Tools-Internet option at the top of the opened IE browser window.
2. In this way, you can open the Internet options window of IE browser. In the pop-up window, switch the interface to the advanced bar;
3. Then find the item "Check the front of the download program" in the setting window below, and then uncheck this item. When you are finished, click the OK button at the bottom of the window to save the settings.
The above is the solution that win8. 1 frequently prompts that the signature is invalid when downloading software using the browser. By default, the system does not check the signature of the downloaded program. If there is a signature prompt, check whether it is checked. This is a simple and practical solution.