After a bit more investigation we found out that 404 Not Found, nginx was caused by Trojans/spyware that were also displaying ads and online surveys on infected computers. We successfully removed malware from the infected computer but we still had the annoying redirect. The problem was modified Windows Hosts file and this particular IP 173.232.149.90 which returned the 404 error. So, to fix the 404 Not Found, nginx problem completely you first have to scan your computer with anti-malware software and delete additional lines from Windows Hosts file manually or overwrite it.
404 Not Found nginx removal instructions:
1. Download recommended anti-malware software (direct download) and run a full system scan to remove this virus from your computer.
NOTE: in some cases the rogue program may block anti-malware software. Before saving the selected program onto your computer, you may have to rename the installer to iexplore.exe or winlogon.exe. Launch the program and follow the prompts. Don't forget to update the installed program before scanning.
2. Check Windows HOSTS file.
Go to: C:\WINDOWS\system32\drivers\etc.
Double-click "hosts" file to open it. Choose to open with Notepad.

The "hosts" file should look the same as in the image below. There should be only one line: 127.0.0.1 localhost in Windows XP and 127.0.0.1 localhost ::1 in Windows Vista/7. If there are more, then remove them and save changes. Read more about Windows Hosts file here: http://support.microsoft.com/kb/972034

3. If the problem persists, please read this web document and follow the steps carefully: http://deletemalware.blogspot.com/2010/02/remove-google-redirect-virus.html
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20 comments:
127.0.0.1
Actually Microsoft has a download that lets u reset the hosts file back to default. I used that to get rid of the 404 error. All u have to do is download and run! then BAM no more virus!
The website is here all u have to do is click fix it for me and download.
http://support.microsoft.com/kb/972034#FixItForMeAlways
Thanks OMEGA worked a treat :)
where do u go to get it
tried installing Mozilla 8.0 on a Dell with Windows XP OS and now got a message about a 404 error. Had trouble installing Mozilla too until the proxy setting was changed and that seemed to fix that problem but now this popped up, any suggestions on how to fix this or do we have a virus problem we're dealing with?
thanks I am sorted now am able to open the u tube for very long i have been finding for the solution
oh thank you soooo very much! it worked. i apparently had malware and the website to remove malware: http://delmal.is3.revenuewire.net/stopzilla/download worked like a charm!!!
thanks again...i am able to see youtube, facebook and other stuff...
THANKS OMEGA WORKS GREAT
Great post OMEGA. It worked out very well!!
I tried it, restarted my computer and it still does it...!!
I tried OMEGA's suggestion and restarted and it did not work for me at all. Still the same 404 message!
I have tried the Microsoft 'Fix It' 50267 tool and it worked brilliantly. I had been trying for weeks to get rid of 404 not found. Thanks Microsoft
Works perfect, thanks! But it did not solve my windows update problem, still cannot display the page when I go to Tools -> Windows Update (XP Pro)
very very very good
great it works...!!!!!!!!!!!
thanks
Thanks..:)
It works!!
how do you save it?
Thanks omega, and to be sure just scan with malwarebytes to remove any viruses causing this
yasalı siteleri acmıyor 404 hatası veriyor
Hi... mmm.. I have a MacBook and I have the same issue in every browser I've tried: Firefox, Chrome, Safari, Opera... This instructions are only for Windows, is there any way I can fix this in my mac? Also I thought it was not possible to catch a virus with this machines, but I have no clue about malware, is that possible? Thanks!