1. Open the browser first, and then click "Tools-Internet Options" on the menu bar; 2. Then, in the pop-up dialog box, switch to the "Advanced" tab, uncheck "Check the signature of the downloaded program", and check "Allow running or installing the software, even if the signature is invalid"; 3. Then click the "Settings" button in the browsing history under the "General" tab; 4. Select "Automatic" in the pop-up setting dialog box to empty the temporary file, then change the storage location of the temporary file and click OK.