How to remove BitGuard – Win32.b.Protector virus & Delta-search hijacker

BitGuard” (By MediaTechSoft Inc) is a malicious program, bundled inside other free software installation programs and upon installed on your computer, it runs in the background, downloads and installs other malware programs from untrusted Internet sources and makes your computer insecure from remote computers attacks. 

The BitGuard program installer also modifies your Internet home page and search settings to “” homepage and settings, in order to redirect browsing results into advertisements from unknown publishers. 

BitGuard.exe” is a variant of Win32.bProtector virus, which hides itself from detection and removal from many antivirus programs. 

To remove “BitGuardWin32.bProtector” – virus & “Delta-search” browser hijacker from your computer follow the steps below:



How to remove "BitGuard” & “Delta-search” settings from your computer:

Step 1. Start your computer in Safe Mode with Networking

As BitGuard removal is difficult to be performed, while running in normal Windows mode, it is better to reboot your computer and to log on to Windows using “Safe Mode with Networking” option.

1. To get into Windows Safe mode with networking, press the “F8” key as your computer is booting up (before the appearance of the Windows logo).

2. When the “Windows Advanced Options Menu” appears on your screen, use your keyboard arrows keys to move to the “Safe Mode with Networking” option and then press “ENTER“.


Step 2. Uninstall applications belonging to the “BitGuard" & “Delta” publisher from your Control panel.

1. To do this, go to:

  • Windows 8/7/Vista: Start > Control Panel.
  • Windows XP: Start > Settings > Control Panel


2. Double click to open

  •  Add or Remove Programs if you have Windows XP
  • Programs and Features if you have Windows 8, 7 or Vista.


3. In the program list, find and Remove (Uninstall) the following applications:

  • BitGuard
  • Delta Toolbar
  • Delta Chrome Toolbar
  • Any other unwanted or unknown application



Step 3. Stop and clean malicious processes with RogueKiller

1. Download and save "RogueKiller" utility on your computer'* (e.g. your Desktop)

Notice*: Download version x86 or X64 according to your operating system's version. To find your operating system's version, "Right Click" on your computer icon, choose "Properties" and look at "System Type" section.


2. Double Click to run RogueKiller.

3. Let the prescan to complete and then press on "Scan" button to perform a full scan.


3. When the full scan is completed, press the "Delete" button to remove all malicious items found.



Step 4. Delete BitGuard hidden files

1. Open Windows Control Panel: “Start” > “Control Panel



2. Change the control panel view from “Category” to “Small icons”.


3. Double-click to open “Folder Options”.


4. Select “View” tab and in the “Advanced Settings” list, check to enable the “Show hidden files folders and drives” option.


5. Click “OK” when finished.


6. Now navigate to the following path & delete the “BitGuard” & “DSearchLink” folders.

  • C:\ProgramData


7. Finally delete the “DSearch” shortcut from your desktop.


Step 5: Clean remaining registry entries using “AdwCleaner”.

1. Download and save “AdwCleaner” utility to your desktop.


2. Close all open programs and Double Click to open ”AdwCleaner” from your desktop.

3. Press “Delete”.


4. Press “OK” at “AdwCleaner – Information”and press “OK” again to restart your computer.


5. When your computer restarts, close "AdwCleaner" information (readme) window and continue to the next step.

Step 6. Remove potentially unwanted programs (PUPs) with Junkware Removal Tool.

1. Download and run JRT – Junkware Removal Tool.


2. Press any key to start scanning your computer with “JRT – Junkware Removal Tool”.


3. Be patient until JRT scans and cleans your system.


4. Close JRT log file and and then reboot your computer.


Step 7. Ensure that “” search settings don’t exist anymore in your Internet browser.

Internet Explorer, Google Chrome, Mozilla Firefox

Internet Explorer

How to remove “Delta-search settings from Internet Explorer.

1. Open Internet Explorer and then open “Internet Options”.

To do this from IE’s file menu, choose “Tools” > “Internet Options”.

Notice*: In the latest versions of IE press the “Gear” icon image_thumb18 on the top right.


2. At “General” tab, delete the “ ” from “Home page” box and type your preferred Home Page (e.g.


3. Then press “Settings” in Search section. *

Notice*: If you want to modify search settings in Internet Explorer while in main Internet Explorer window, just press the “Gear” icon image_thumb18 (on the top right corner) and choose “Manage Add-ons” .


4. On "Search Providers" options, choose and "Set as default" a search provider other than any unwanted search engine found there.


5. Then choose the unwanted search engine “Delta-Search” and click Remove.


6. Choose “Toolbars and Extensions” on the left pane and then select any unwanted toolbar or extension belonging to “Delta” or “Visual Tools” publisher and click "Disable"



7. Close all Internet Explorer windows and restart your browser.

8. Proceed to Step 8.

Google Chrome

How to remove “Delta-search” settings from Google Chrome.

1. Open Google Chrome and go to chrome menu image and choose "Settings".


2. Find the "On startup" section and choose "Set Pages".


3. Delete the from startup pages by pressing the "X" symbol on the right.


4. Set your preferred startup page (e.g. and press "OK".


5. Under “Appearance” section, check to enable the “Show Home button” option and choose “Change”.


6. Delete the “ ” entry from “Open this page” box.


7. Type (if you like) you preferred webpage to open when you press your “Home page” button (e.g. or leave this field blank and press “OK”.


8. Go to "Search" section and choose "Manage search engines".


9. Choose your preferred default search engine (e.g. Google search) and press "Make default".


10. Then choose the "delta-search" search engine and remove it by pressing the "X" symbol at the right.

Choose "Done" to close "Search engines" window.


11. Choose "Extensions" on the left.


12. Remove the unwanted extension “Delta-Toolbar” from here by pressing the “recycle icon” to the right.


13. Close all Google Chrome windows and restart your browser.

14. Proceed to Step 8.

Mozilla Firefox

How to remove “Delta-search” settings from Mozilla Firefox.

1. Click on “Firefox” menu button on the top left of Firefox window and go to “Options”.


2. In “General” tab delete the “” page from “Home Page” box and type your preferred HomePage (e.g.

Press “OK” when finished.


3. From Firefox menu, go to “Tools” > “Manage Add-ons”.


4. Choose “Extensions” on the left and then remove the unwanted extension “delta-search” (if it exists there), by pressing the "Remove" button.


5. Choose “Plugins” on the left and “Disable” all unwanted plugins from here (e.g. “Conduit Plugin”).


6. Close all Firefox windows and restart your browser.

7. Proceed to the next Step.


Step 8. Clean your computer from remaining malicious threats.

Download and install one of the most reliable FREE anti malware programs today to clean your computer from remaining malicious threats. If you want to stay constantly protected from malware threats, existing and future ones, we recommend that you install Malwarebytes Anti-Malware PRO:

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1. Run "Malwarebytes Anti-Malware" and allow the program to update to its latest version and malicious database if needed.

2. When the "Malwarebytes Anti-Malware" main window appears on your screen, choose the "Perform quick scan" option and then press "Scan" button and let the program scan your system for threats.


3. When the scanning is completed, press “OK” to close the information message and then press the "Show results" button to view and remove the malicious threats found.


4. At the "Show Results" window check – using your mouse's left button- all the infected objects and then choose the "Remove Selected" option and let the program remove the selected threats.


5. When the removal of infected objects process is complete, "Restart your system to remove all active threats properly"


6. Continue to the next step.

Advice: To ensure your computer is clean and safe, perform a Malwarebytes’ Anti-Malware full scan in Windows “Safe mode“.*

*To get into Windows Safe mode, press the “F8” key as your computer is booting up, before the appearance of the Windows logo. When the “Windows Advanced Options Menu” appears on your screen, use your keyboard arrows keys to move to the Safe Mode option and then press “ENTER“.

Step 9. Clean unwanted files and entries.

Use “CCleaner” program and proceed to clean your system from temporary Internet files and invalid registry entries.*

*If you don’t know how to install and use “CCleaner”, read these instructions.

Step 10. Restart your computer for changes to take effect and perform a full scan with your antivirus program.

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