Solution 1 - Check for system updates
First check whether there are any Windows updates or program updates running in the background as this can cause download delays. If there are Windows updates available, perform the update and try downloading the game again.
Solution 2 - Uninstall/reinstall your security software program
Be sure to uninstall it from the control panel on your computer. You can then install your security program again and then try downloading the game again as this may already be resolved.
Solution 3 - Temporarily switch off/disable your security program
If the issue isn't resolved from solution 1, please temporarily switch off your security program and try the game again. Be sure to switch it back on after.