Windows Ultimate Booster Removal Guide

Do you know what Windows Ultimate Booster is?

Windows Ultimate Booster is a dangerous computer infection. It is a rogue antispyware application else known as fake antivirus program. It means that Windows Ultimate Booster looks like a computer security tool, but in reality it is a dangerous threat that aims for your money. Unless you remove Windows Ultimate Booster from your computer, the infection will disable one system function after another to push you into purchasing the full version of the program. Needless to say, that this is the last thing you should do.

It may seem that there is no other way to restore Windows Explorer and other system tools but to purchase the license for Windows Ultimate Booster. This rogue can successfully deny access to Windows Task Manager, Registry Editor and even your web browser. Although the impression is made to make you think that you are experiencing this because of multiple malware infections, Windows Ultimate Booster does not allow you to access these system tools in order to protect itself from being removed. The same tactics have been employed by other infections from the same group, including Windows Efficiency Kit, Windows Prime Booster, Windows Prime Shield and other members of Rogue.FakeVimes family.
Windows Ultimate Booster Removal GuideWindows Ultimate Booster screenshot
Scroll down for full removal instructions

This group of fake antivirus programs can also be called Rogue.VirusDoctor, but it would still be the same family of rogues. Due to the fact that Windows Ultimate Booster comes from such an extended compilation of computer infections we actually know what to expect of it.

For one, Windows Ultimate Booster will definitely perform a full system scan once the rogue is installed on the PC. Needless to say, that you need to ignore the scan results, as they are absolutely fake. Another thing you need to ignore is fake system pop-ups. They are there to make an impression that Windows Ultimate Booster is part of the built-in Windows defense mechanism and the program is really there to protect you from harm.

Naturally, that is not the case, and to make the infection symptoms disappear for a time being, you should register Windows Ultimate Booster with one of the following registration numbers:


Activating the rogue buys you some time and you can then get yourself a powerful antimalware tool that would help you terminate Windows Ultimate Booster for good. If you want to restore Windows Explorer manually, then refer to the instructions below. Also, should you have any questions about Windows Ultimate Booster or its removal, do not hesitate to leave me a comment.

How to unlock Windows Explorer

  1. Restart your computer and press F8 several times.
  2. Select Safe Mode with Command Prompt and hit Enter.
  3. Enter cd… in a line next to C:\Windows\system32\ and hit Enter.
  4. Type \explorer.exe next to C:\Windows line and press Enter.
  5. Open Start menu and enter %appdata% into the search box. Press Enter. For Windows XP, open Run and enter %appdata% into the Open box. Click OK.
  6. Delete the guard-{4 random symbols}.exe file from the directory.
  7. Restart the PC in Normal Mode.
  8. Open Start menu and enter regedit into the Search box. Press Enter. For Windows XP, launch Run and enter regedit into Open box. Click OK.
  9. Navigate to HKEY_CURRENT_USER\Software\Microsoft\Windows NT\Current Version\Winlogon.
  10. On the right pane, right-click Shell and select Modify.
  11. Enter %WinDir%\Explorer.exe to change Value and press OK.
  12. Close Registry Editor and access
  13. Install SpyHunter and run a full system scan.

In non-techie terms:

Windows Ultimate Booster is a rogue antispyware application that targets your money. It infects the system and pretends to be the only reliable tool available at the moment. You need to remove Windows Ultimate Booster from your PC at once, and then scan the system for any other potential threats, because rogues seldom come alone.

Aliases: WindowsUltimateBooster.