Hi there
Probably browser settings. Cookies disabled perhaps.
Just reset all settings to default in Control Panel -> Internet Options.
If it still doesn't work the goto:
C:\Program Files\Internet Explorer
Find the file iexplore.exe and right click on it. Select Run as Administrator.
If you are able to download after this then try downloading a different browser like Firefox. (
Firefox web browser | Faster, more secure, & customizable)
Please let me know of this helped.
Cheers
Grant