Somehow your Internet Explorer security settings have been changed. If you
look in the lower right corner of Internet Explorer, does it say
"Internet|Protected Mode: On"? If it says "Restricted Sites..." you have
added this site to the Restricted Sites zone, and downloads are not permitted
in that zone.
If it says "Internet..." here is how you fix it:
1. Click the Tools button in the top left corner
2. Click "Internet Options"
3. Click the "Security" tab
4. Click the button for "Reset all zones to default level."
5. Click OK.
Now try to download and it should work.
If it says "Restricted sites..." start by following steps 1-3 above. Then do:
4. Click the "Restricted sites" icon
5. Click the "Sites" button
6. Select the site you want to download from and click the "Remove" button
7. Click OK twice.
The first warning you mention, as far as I can tell, is not an Internet
Explorer warning. Do you have some third party anti-malware program
installed? It seems likely that the warning about "unverified submissions"
comes from that, not from Internet Explorer.
Your question may already be answered in Windows Vista Security:
> Hi everyone,
> I'm new to Vista and am currently using Vista Ultimate.
> The security settings sem to block out all my third party downloads stating
> the following:
> Unverified Submission.
> Only install applications from developers you trust. This is a third-party
> application and it could access your computer's files, show you objectionable
> content or change its behaviour at any time.
> Since i'm downloading from the microsoft website itself (tested it out with
> vista sidebar downloads), i trust the so-called third-party to be secure.
> Moving on, clicking "OK" and choosing to save the file to computer, it says
> the following:
> Your current security settings do not allow this file to be downloaded.
> I really need help for this as it's blocking most of my downloads, even the
> attachments in my mails. I tried enabling file download for all trusted/
> restricted sites etc just to test it out but it still remains the same. The
> only successful download so far being a NVIDIA driver download from
> Would greatly appreciate if anyone can aid me in this. Thanks in advance.