How to remove the MS Removal Tool from your computer.

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Article ID: 2540100
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SYMPTOMS

When you start your computer, you see a MS Removal Tool window that restricts you from accessing your desktop. You cannot start Task Manager, and you cannot open Internet Explorer or any other programs. This situation is the result of malware (a variant of Win32/Winwebsec) that is infecting your computer.

RESOLUTION

To remove the MS Removal Tool, follow the steps below:
  1. Boot your computer into Safe Mode.
    1. Windows XP and Windows Vista:
      1. Start your computer and press and hold the F8 key.
      2. A Windows Advanced Options menu will appear. Use your arrow keys to scroll to Safe Mode and click the Enter key.
  2. Click the Start button, and then click Run.
  3. Type cmd then click OK. A black command prompt window will appear.
  4. Locate the affected directories:
    1. Windows XP:
      1. Type cd c:\Documents and Settings\All Users\Application Data\ and press the Enter key.
      2. Type dir and press the Enter key.
    2. Windows Vista:
      1. Type cd c:\ProgramData\ and press the Enter key.
      2. Type dir and press the Enter key.
      3. Type c:\Users\All Users\ and press the Enter key.
      4. Type dir and press the Enter key.
  5. Scroll through the list to find directories with random names that contains 18 characters. For example: cHl08200gMhHd08200 , pJg08200fBmPl08200.
  6. Type rd /s /q <random name>, and then press the Enter key. Replace <random name> with the 18 character name. Repeat this step for each random name you find.
  7. Type reg delete hkcu\software\microsoft\windows\currentversion\runonce /v <random name> /f, and then press the Enter key. Replace <random name> with the 18 character name. Repeat this step for each random name you find.
  8. Reboot your computer.

The Microsoft Safety Scanner will scan and remove viruses and other malicious software from your computer, including the MS Removal Tool. If you can access the internet, download the Microsoft Safety Scanner by following the steps below:
  1. Go to: http://www.microsoft.com/security/scanner/en-us/default.aspx
  2. Click Download Now.
  3. Follow the on screen instructions to download the Microsoft Safety Scanner.
  4. Once the Microsoft Safety Scanner is installed, open the program and click Run.
Microsoft provides Microsoft Security Essentials, which is a free program that helps protect you from viruses and other malicious software installing on your computer. To download and install Microsoft Security Essentials, please follow the steps below:
  1. Go to: http://windows.microsoft.com/en-US/windows/products/security-essentials
  2. Click Download it free* today.
  3. Follow the on screen instructions to download and install Microsoft Security Essentials.



MORE INFORMATION

For more information about the Microsoft Safety Scanner, visit: http://www.microsoft.com/security/scanner/en-us/default.aspx

For more information about the MS Removal Tool, visit: http://www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=MSRemovalTool

For more information about Microsoft Security Essentials, visit: http://windows.microsoft.com/en-US/windows/products/security-essentials


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Article ID: 2540100 - Last Review: October 27, 2011 - Revision: 2.0
Keywords: 
KB2540100

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