File is not commonly downloaded and could be dangerous

I have an EXE setup file (MySetup.exe) and posted on my website for download.
And yes, I get this warning message as soon as the download starts.
File is not commonly downloaded and could be dangerous

I tried following things to get rid of this warning.

  1. I added my site to Google Webmaster Tools,Verified the site using the File Upload and GA. still warning appears
  2. Tried zipping setup file, No luck
  • I have not signed my EXE and can not afford that as well. But i saw many exe files direct download
    from other links without any signature.No warning appeared in those files.

  • I am using Inno setup installer to pack the application exe

Please help!

Thanks, I resolved this.