This is because downloading unsigned ActiveX controls is set to disabled, just set it to enabled or prompted. The specific operation method is:

1. Open the start menu, Find the control panel and click to enter.

2. In the opened interface, find the Internet option and click to enter.

3. In the jump interface, click the Security tab above.

4. In the jump interface, click Custom Level.

5. Then find the option to download unsigned ActiveX controls and set it to enable or prompt.

6. Then click OK below.