This is a type of adware that is developed and distributed by “”. It installs automatically on your browser files and in most cases it’s installed as BHO or Browser Helper Object. This adware monitors all your browsing details, and your browsing habits to send them to the developers of this adware program. Once it installed on your PC, it will display a huge quantity of the pop-up ads on the screen of your PC. It is highly recommended that remove 404Search virus from your PC immediately in order to avoid further damage.

How to Remove 404Search Manually

404Search is a type of virus that not only occupies the resources of your system, but it also causes the huge slowdown in the speed, and performance of your computer. Often this adware program sends pop up ads to interrupt the users while they are performing important tasks on their computer. This malware has the ability to permanently destroy the data saved on your PC. In order to remove this dangerous malware from your computer, following are the instructions that you need to follow:-

Remove Following Registry Entries

Whenever you found that your computer is not running normally, you must check the following entries in the registry section of your windows operating system, and immediately delete these entries as soon as you can see them:-

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_LOCAL_MACHINE \Software \Microsoft \Windows \CurrentVersion \RunServicesOnce
  • HKEY_CURRENT_USER/Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER \Software \Microsoft\ Windows\ CurrentVersion\ Policies\ Explorer\Run
  • HKEY_CURRENT_USER\ Software\ Microsoft \Windows\ CurrentVersion
    Explorer/ShellFolders Startup=”C:\windows/start menu/programs\startup

Often this adware program files are hidden in the Win.Ini under the strings “load” and “run”, therefore, these must be carefully checked. You also need to clean the “Internet Explorer Temporary File Folder” because mostly the carrier of this spyware stored in that folder.


Remove Following Files

  • 404sea~1.dll
  • 404search.dll
  • 404searchsetup_ms54.exe

Make sure that you have the backup of registry files before trying to delete or modify it. And remember that you know the process of restoring the windows registry, because often people delete important registry files while removing the 404Search adware program.


Replace DLL Files

Go to the “Start” button, and select “Run”. Type REGSVR32-u<dll name> and click “OK”. Replace <DLL name> with the following dll files:-

  • 404sea~1.dll
  • 404search.dll

You have to click on “Start” button again and select “Run”. Type “Regedit” in the box, and click “ok” to navigate towards registry keys. Delete the following registry key:-

  • HKEY_CURRENT_USER\software\search404\all\info

After doing this you have to restart your computer and see whether the performance of your computer is improved. If you still feel that the problem exists, check these files, and registry keys again that is there any file still remaining which is needed to be deleted. In most cases if you follow the instruction, you can easily remove the 404Search. If you feel that these instructions are too complicated for you, you can also choose some automatic tools to get rid the dangerous virus of 404Search.

How to Remove 404Search?
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