Prompt when installing software under Win8: Filter has blocked startup, unable to install

Knowledge point analysis:
When installing software under Windows 8, sometimes the filter will prompt to prevent the startup, as shown below:

Windows 8 will send you and send the program information to Microsoft's server. The Microsoft server will return an evaluation of the app. If the application you are downloading is a legitimate or more commonly used application, such as the Sogou browser, then Windows 8 will run automatically. If SmartScreen does not have information about the application, whether it is a malicious plugin or a new application, Windows 8 will prevent the program from running. In IE8 and IE9, SmartScreen works the same way.
Operating steps:
1. If you are sure that the open application is safe, click the “More info"---"; still run" button, the system will allow the program to run It is.
2. Of course you can also turn off SmartScreen.
Press Win+X key combination---Control panel---Operation center---Change Windows SmartScreen filter settings---Do not perform any operation---OK. As shown below: