The disk may be full or there may be a network problem.

Method: 1. First, confirm whether its target disk is full. Open My Computer and click on the target disk to see the details. If the target disk is full, nothing can be downloaded. 2. In addition, if you have anti-virus software or security guards installed on your computer, you can uninstall them first. 3. Check whether these software have affected your downloads. If that doesn't work, uninstall the software and restart it. 4. Then we can open the Control Panel and double-click to open the INTERNET option. 5. Let’s click “Delete” in the “General” panel to delete all history records and COOKING and take a look. 6. We click on the "Security" panel again, click on "Custom Level", enable all download options, and click OK. 7. We then click on the "Advanced" column in the INTERNET options, find the "Security" column, and uncheck the box in front of "Check the signature of downloaded programs". 8. We then click on the "Advanced" column in the INTERNET options, find the "Security" column, and uncheck the box in front of "Check the signature of downloaded programs". 9. Scroll down and find "Allow running or installing software even if the signature is invalid." Hook up. Click OK to save.