Downloads Blocked By Security Zone Policy
If you installed Firefox 3 and are using Windows, you might run into a problem where Firefox does not allow you to download exe files from the Internet due to a Windows setting. You will get the message: This download has been blocked by your Security Zone Policy and your download file will never download. To fix this problem you must modify Internet Explorer settings!

- Open Internet Explorer.
- Choose Tools menu - Internet Options.
- Click the Security tab and click on the Internet icon.
- Click the Default Level button if it is clickable
- Then click Custom Level… and navigate to Miscellaneous.
- Under this section find the option: Launching applications and unsafe files.
- Change it from Disable to Prompt (Recommended).
- Click OK, Apply, then OK.
- Startup Firefox again and test it to see if it works now.


July 30th, 2008 14:56
This doesn’t work because when I click TOOLS, and click OPTIONS, the security system is completely different.
October 24th, 2008 14:03
Worked perfect, thanks!
October 29th, 2008 09:23
Wonderful! Thank you so much! =)
November 19th, 2008 15:17
I don’t have that under miscellaneous :/ It’s like it skipped over it… I only have the IFRAME option, but nothing before that… HELP!
November 19th, 2008 19:49
Today, November 19, 2008, I was trying to download picasa.google.com and got the This download has been blocked …message. But I could download from other sites. What it turned out to be is that somehow–undoubtedly one of my security programs–had added *.google.com to the Internet Properties>Security>Restricted sites list. I removed it and was able to download.