Windows Ultimate Booster

Also Known As: Windows Ultimate Booster rogue
Distribution: Low
Damage level: High

Windows Ultimate Booster removal instructions

What is Ultimate Booster?

Windows Ultimate Booster is a rogue antivirus program, which indicates various non existent security threats in order to scare PC users into believing that their computers are infected with high-risk malware. The main purpose of this malicious behavior is to sell a license key for this fake antivirus program. PC users should be aware that paying for the full version of Windows Ultimate Booster is equivalent to sending their money to cyber criminals - they will lose their money and their computers will remain infected with this bogus software. After successful infiltration, this rogue program modifies the registry entries of an infected operating system, disables execution of installed software (including Internet browsers), blocks the Task Manager, and configures itself to start automatically on each system Startup.

windows ultimate booster

This fake security scanner originates from a family of fake antivirus programs called FakeVimes. Commonly, cyber criminals responsible for creating such rogue programs use fake online security scanners in order to trick PC users into downloading their bogus software. Fake online security scanners are malicious pop-up ads, which mimic the detection of security infections and offer installation of security software, supposedly to eliminate them. Other known infiltration methods are infected email messages, malicious websites, and P2P networks. Do not trust Windows Ultimate Booster - it is a scam.

Windows Ultimate Booster is identical to previous variants named Windows Efficiency KitWindows Prime Accelerator, and Windows Prime Booster. Cyber criminals responsible for developing these fake antivirus programs employ identical user interfaces and functionality, the only difference being the name of their rogue software. Users who have already paid for the 'ultimate protection' (full version) of Windows Ultimate Booster should immediately contact their credit card company and dispute the charges, explaining that they have been tricked into purchasing a fake antivirus program. To avoid installation of such fake security scanners, PC users should not trust online pop-up messages offering installation of antivirus programs.

Screenshot of a fake security warning message blocking execution of Internet browsers:

Windows Ultimate Booster generating fake security warning pop-ups

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Quick menu:

Windows Ultimate Booster removal:

Complete these steps to access your desktop:

1. Wait until Windows Ultimate Booster completes its fake security scan and click "Settings" (at the top of the main window).

Windows Ultimate Booster settings

2. Select "Allow unprotected Startup".

Windows Ultimate Booster unprotected startup

3. After selecting "Allow unprotected Startup", close Windows Ultimate Booster.

4. Access "My Computer" - double click on "My Computer" icon.

Windows Ultimate Booster accessing My Computer

5. Navigate to C:\Users\[YOUR USER NAME]\AppData\Roaming

Windows Ultimate Booster accessing appdata folder

6. Locate a file named "svc-[random letters].exe" and click your right mouse button over this file.

Renaming the executalbe of Windows Ultimate Booster step 1

7. In the opened menu, select "Rename". Change the filename of "svc-[random letters].exe" to "fake.exe".

Renaming the executalbe of Windows Ultimate Booster step 2

8. After renaming the "svc-[random letters].exe" file, restart your computer. Next time the operating system boots, Windows Ultimate Booster will be inactive and will not block access to Internet.

6. Download legitimate anti-spyware software to completely remove this rogue antivirus program from your computer.

If you cannot download or run the spyware remover, try running the registry fix (link below). It enables execution of programs. Download the registryfix.reg file, double click it, click YES and then OK.

Windows Ultimate Booster removal using a registry key:

1. Click the question mark icon (at the top of the main window of Windows Ultimate Booster) and select "Register".

Removing Windows Ultimate Booster using registry key step 1

2. In the opened window enter this registry key: 0W000-000B0-00T00-E0001

Removing Windows Ultimate Booster using registry key step 2

3. After entering this registry key, Windows Ultimate Booster will mimic the removal of previously 'detected' security threats and allow execution of installed programs. Note that entering this registration key will not remove this rogue antivirus program - it simply makes the removal process less complicated.

4. Download legitimate anti-spyware software to completely remove Windows Ultimate Booster from your computer.

Windows Ultimate Booster removal using Safe Mode with Networking:

Step 1

Windows XP and Windows 7 users: Start your computer in Safe Mode. Click Start, click Shut Down, click Restart, click OK. During your computer starting process press the F8 key on your keyboard multiple times until you see the Windows Advanced Option menu, then select Safe Mode with Networking from the list.

Starting Windows in Safe mode with networking

Video showing how to start Windows 7 in "Safe Mode with Networking":

Video showing how to start Windows XP in "Safe Mode with Networking":

Step 2

Remove proxy settings from Internet Explorer. This rogue antivirus adds a proxy to the user's Internet connection settings in order to display various errors when the user attempts to access the Internet. To remove proxy settings: Open Internet Explorer and click the gear icon. In the opened menu, select "Internet Options".

Removing proxy setings from Intenret Explorer step 1

In the opened window select the "Connections" tab.

Removing proxy settings from Internet Explorer step 2

In the "Connections" tab, click on "LAN settings".

Removing proxy settings from Internet Explorer step 3

If "Use a proxy server for your LAN" is checked, uncheck it and click OK.

Removing proxy settings from Internet Explorer step 4

Step 3

Download legitimate anti-spyware software to completely remove this fake antivirus program from your computer.

Step 4

After removing this rogue software, reset your Hosts file. Do not skip this step since Windows Ultimate Booster modifies your Hosts file and you will encounter browser redirect problems if malicious entries are not eliminated.

The Hosts file is used to resolve canonical names of websites to IP addresses. When it is changed, the user may be redirected to malicious sites, despite seeing legitimate URLs in address bar. It is difficult to determine sites are genuine when the Hosts file is modified. To fix this, please download the Microsoft Fix It tool, that restores your Hosts file to the Windows default. Run this tool when downloaded and follow the on-screen instructions. Download link below:

Other tools known to remove Windows Ultimate Booster:


The fake antivirus programs (also known as "rogue antivirus programs" or "scareware") are applications that tries to lure computer users into paying for their non-existent full versions to remove the supposedly detected security infections (although the computer is actually clean). These bogus programs are created by cyber criminals who design them to look as legitimate antivirus software. Most commonly rogue antivirus programs infiltrate user's computer using poop-up windows or alerts which appear when users surf the Internet. These deceptive messages trick users into downloading a rogue antivirus program on their computers. Other known tactics used to spread scareware include exploit kits, infected email messages, online ad networks, drive-by downloads, or even direct calls to user's offering free support.

A computer that is infected with a fake antivirus program might also have other malware installed on it as rogue antivirus programs often are bundled with Trojans and exploit kits. Noteworthy that additional malware that infiltrates user's operating system remains on victim's computer regardless of whether a payment for a non-existent full version of a fake antivirus program is made. Here are some examples of fake security warning messages that are used in fake antivirus distribution:

Fake pop-up used in rogue antivirus distribution example 1

Fake pop-up used in rogue antivirus distribution example 2

Computer users who are dealing with a rogue security software shouldn't buy it's full version. By paying for a license key of a fake antivirus program users would send their money and banking information to cyber criminals. Users who have already entered their credit card number (or other sensitive information) when asked by such bogus software should inform their credit card company that they have been tricked into buying a rogue security software. Screenshot of a web page used to lure computer users into paying for a non-existent full version of windows ultimate booster rogue and other rogue antivirus programs:

example of a webpage used to collect payments for fake antivirus programs

To protect your computer from windows ultimate booster rogue and other rogue antivirus programs users should:

  • Keep their operating system and all of the installed programs up-to-date.
  • Use legitimate antivirus and anti-spyware programs.
  • Use caution when clicking on links in social networking websites and email messages.
  • Don't trust online pop-up messages which state that your computer is infected and offers you to download security software.

Symptoms indicating that your operating system is infected with a fake antivirus program:

  • Intrusive security warning pop-up messages.
  • Alerts asking to upgrade to a paid version of a program to remove the supposedly detected malware.
  • Slow computer performance.
  • Disabled Windows updates.
  • Blocked Task Manager.
  • Blocked Internet browsers or inability to visit legitimate antivirus vendor websites.

If you are experiencing problems while trying to remove windows ultimate booster rogue from your computer, please ask for assistance in our malware removal forum.

If you have additional information on windows ultimate booster rogue or it's removal please share your knowledge in the comments section below.

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About the author:

Tomas Meskauskas

Tomas Meskauskas - expert security researcher, professional malware analyst.

I am passionate about computer security and technology. I have an experience of over 10 years working in various companies related to computer technical issue solving and Internet security. I have been working as an author and editor for since 2010. Follow me on Twitter and LinkedIn to stay informed about the latest online security threats. Contact Tomas Meskauskas.

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Malware activity

Global malware activity level today:

Medium threat activity

Increased attack rate of infections detected within the last 24 hours.

QR Code
Windows Ultimate Booster rogue QR code
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