How to remove Trustedinstaller Trojan?


Trustedinstaller is a Trojan Horse malware that acts as an essential part of the Windows OS and stops you from deleting or corrupting the critical files on your system.

A typical Trustedinstaller Trojan virus can perform one, more, or all of the following on your system:

  • Install other dangerous malware on your systems like Spyware, Ransomware, and others.
  • Give remote access of your PC to attackers.
  • Malicious pop-ups randomly appear on the browser.
  • Use your computer’s power to carry out illicit activities.
  • Collect information from your system such as keystrokes, user credentials, etc., store them, and send them to the cybercriminals.

When Trustedinstaller Trojan Virus attacks your system, you would sense the following symptoms on your computer:

  • High RAM and GPU usage, making the system heat up even without heavy use.
  • Application on the system load prolonged because the Trojan is using most of the computing power
  • You will find random file and application downloaded automatically on your system
  • Internet usage is unnaturally surged up

In this guide, we will walk through the process of removing Trustedinstaller Trojan from the system. 

What is Trustedinstaller Trojan?

Trustedinstaller pretends to be a useful program but in reality, it is a Trojan that can perform a set of malicious activities. It can provide backdoor access to your PC to the hacker or can also exploit the vulnerability of the software. Trustedinstaller is a dangerous program that looks legitimate, but in the background, it harms your computer in several ways.

How does Trustedinstaller Trojan enter your PC?

Trustedinstaller Trojan can use several mediums to enter your PC. In every medium, the user downloads it thinking as genuine software. It could be bundled with the free or pirated software and when you download and install that software the Trojan enters your PC. It can also use a phishing attack to trick you into downloading. Also, it can use social media, the cybercriminals may send you the Trojan from the name of someone you knew and you trust them blindly. Trustedinstaller Trojan can also enter using the browser's vulnerability.

Below are some common signs that you have Trojan on your system:

  • Slow PC with frequent crashes
  • High disk and network usage
  • Seeing unexpected errors and pop-ups
  • Unusual browser behaviour
  • Unknown suspicious programs in your PC.
  • Disabled security software
You should always pay attention while installing software specially the free software, because often, such installers includes bundled software. Don't click on Install before checking everything.
Always opt for the custom/advanced installation mode and deselect anything other than the actual program, especially recommended software that you don't need. In short, you should not install suspicious software. Also, never download pirated software

How to remove Trustedinstaller Trojan (Removal Guide)

This removal guide contain complicated steps. However, our intention was not to make it complex rather we include strong measurements in the guide that can help you to remove the malware from your PC completely.
Please perform all the steps in the correct order. If you have any questions or doubt at any point, comment down and we will try to assist you.

To remove the Trustedinstaller Trojan, follow these steps:


STEP 1: Stop the Trustedinstaller Trojan Process

To remove Trustedinstaller Trojan, you should first stop it from running. So that it can’t interfere with the removal process. If the Trojan keeps running it won’t allow you to uninstall the program and may create duplicate processes.

To stop Trustedinstaller Trojan, open the task manager. Right-click on the taskbar and choose “Task Manager”.
Stop Trustedinstaller Process

Now you will see the list of processes. Now find the Trustedinstaller process in the process list. Select it and click on “End task”.
Stop Trustedinstaller Process 2

Now check the “Startup” tab. If the process is there, select it and click on “Disable”. Now it won’t run again when you restart the PC.
Stop Trustedinstaller Process 3


STEP 2: Clear the Temporary Files

Trojan hides in the temporary files so that they can re-infect your PC. So you should clear the temporary files from your system. To that, click on the “Start” menu, and type “Disk Cleanup”. Click on it to open.
Clear Temporary Files

Then select the system drive and click “OK”.
Clear Temporary Files 2

Now here, deselect everything and select “Temporary Files” and “Temporary Internet Files”. Then click on “OK”.
Clear Temporary Files 3

Click on “Delete Files” to confirm your action.
Clear Temporary Files 4


STEP 3: Uninstall the Suspicious Program

In this first step, we will be identifying and uninstalling the malicious software from our PC.

  1. Go to “Programs and Features”.

    Windows 10

    1. On the Start menu, type Control Panel in the Cortana search box and then select “Control Panel” from the results.
      Uninstall Trustedinstaller from Control Panel
    2. When the “Control Panel” window opens click on the “Uninstall a program” option under “Programs” category.
      Uninstall Suspicious Programs from Control Panel 2

    Windows 8

    Right-click on the Start button and select “Programs and Features”. You will directly reach to the list the of programs installed.

    Right click on Start and select Programs and Features - Windows 8.1 Help
    • If there is no Programs and Features in the Start menu, then type “programs and features” into the search bar at the bottom of the Start window, then click the “Programs and Features” result.
    • If you don’t see the a Start button, you are likely running Windows 8 instead of Windows 8.1. So, press the Windows key + X to open the menu instead and select “Programs and Features”.

    Windows 7

    1. Click on Start, then click on “Control Panel”.
      Click on Start then Control Panel - Windows 7 Help

      If you don’t see “Control Panel” here, type control panel into the search bar at the bottom of the Start window, then click the “Control Panel” result.
    2. Once you see the “Control Panel”, click on “ Uninstall a Program” from the Programs category.
      Open Uninstall a Program Section
  2. Find the malicious program and uninstall it.

    Now you will see the list of all installed programs in the PC, carefully observe every program and find the unwanted applications, then select it, and click the “Uninstall” button.

    Your PC may have different malicious program thus the name may not match. If you cannot find any unwanted malicious programs on your PC, then you can skip to the next step

    Uninstall Unwanted Malicious Programs from Windows

  3. Follow the screen instructions to uninstall the program.

    In the next screen prompt, click on Yes, and then follow the prompts to uninstall the program.

    Read all screen instructions carefully during installation, because malicious programs always try to trick you in hoping that you won’t read properly.

If the program you are uninstalling is stubborn and doesn't easily uninstall, then you can use Revo Uninstaller Free. It will help you to remove an unwanted program completely from your PC.

STEP 4: Reset Browsers to Remove Trustedinstaller Infection

If you are still seeing Trustedinstaller site on your browser, then you need to reset the web browser settings to their defaults. If your issue has been solved by the above methods, then there is no need to follow this step.

Google Chrome

To remove Trustedinstaller trojan infection from Google Chrome, you need to reset the browser to its default settings. Resetting the browser settings will undo the unwanted changes due to malicious software. However, resetting will not affect the bookmarks and passwords saved in the Chrome.

  1. Open Chrome’s “Settings” menu.

    Click on Chrome’s main menu button, located in top right corner and looks like three vertical dots. Now click on “Settings”.
    Google Chrome Settings Menu

  2. At the bottom, click “Advanced”.

    You will see Chrome’s “Settings” in a new tab. Next, scroll down to the bottom and click on the “Advanced” button.
    Click on the Advanced button - Google Chrome Help

  3. Under the section “Reset,” click “Reset”.

    Now you will see Chrome’s advanced settings. Scroll down to the “Reset and clean up” section. Then click on the “Reset settings to their original defaults” button.
    Google Chrome Reset button

  4. Confirm by clicking “Reset”.

    Now you will see a confirmation dialog, detailing the components that will be restored to their default state should you continue on with the reset process. To confirm the reset action, click on the “Reset Settings” button.
    Click on Reset to restore Google Chrome to its default settings

Mozilla Firefox

To remove Trustedinstaller Trojan infection from Mozilla Firefox, you need to reset the browser to its default settings. Resetting will remove several changes done by malicious software or add-ons, however it doesn't affect important things like bookmarks, web form auto-fill information, passwords, browsing history and open tabs.

  1. Go to the “Help” menu.

    Click on Firefox’s main menu button, located in the top right corner, represented by three horizontal lines. Then click on “Help“.
    Click on the Firefox Menu button then select Help - Firefox Guide

  2. Click “Troubleshooting Information”.

    Now click on “Troubleshooting Information“.

    If you’re unable to access the “Help” menu, then you can type about:support in the address bar and press enter to directly open troubleshooting page.

    Troubleshooting Information option in Firefox

  3. Click on “Refresh Firefox”

    Now click on the “Refresh Firefox” button which is on the upper-right corner of the “Troubleshooting Information” page.
    Refresh Firefox button

  4. Confirm.

    Now you will see the confirmation message telling you the action you are about to take. Click on the “Refresh Firefox” button to confirm the action.
    Confirm Reset Firefox

  5. Click on “Finish”.

    Firefox gets closed and its settings will reset. Then it will display the list with information that was imported. Now click on the “Finish“.

Firefox will collect the information that it removed and put it in the “Old Firefox Data“ folder on the desktop. If resetting does not fix the problem you can restore this information by putting the files in the current profile folder. This folder contains senstive information, so if you don't need it then delete it so that it doesn't get in hands of other people.

Internet Explorer

To remove Trustedinstaller Trojan infection from Internet Explorer, you need to reset the browser to its default settings. Resetting will help you to take Internet Explorer settings to the stat when it was first installed on your computer.

  1. Go to “Internet Options”.

    Open Internet Explorer browser, click on the gear icon in the top right part of the browser, now select “Internet Options“.
    Click on the Gear Icon then select Internet Options - Help Guide

  2. Go to “Advanced” tab, then click “Reset”

    In the “Internet Options”, click on the “Advanced” tab, then select the “Reset” button.
    In the Advanced tab click on the Reset button - Help Guide

  3. Click on “Reset”.

    In the “Reset Internet Explorer settings” window, click on the “Delete personal settings” checkbox, then click on the “Reset” button.
    Click on the Reset button to revert IE to its default settings - Help Guide

  4. Click on “Close”.

    Once the Internet Explorer completes all the action, click on the “Close” button.
    Now you need to restart the Internet Explorer browser.
    Click on the Close button - Help Guide

Microsoft Edge

To remove Trustedinstaller Trojan infection from Microsoft Edge, you need to reset the browser to its default settings. You can repair or reset the Microsoft Edge settings after the Windows 10 Fall Creators Update (version 1709).

  1. Go to “Apps and Features”.

    Right-click on the Start button and select “Apps and Features“. It will open the list of all installed programs.
    Go to Apps and Features in Windows 10

  2. Find Microsoft Edge from the list, then click “Advanced Options”.

    You will see the list of all programs in your PC. Scroll through the list and locate “Microsoft Edge”, select it, and then click on the “Advanced options”.
    Microsoft Edge Advanced Options

  3. Click on “Reset”.

    Now you will see the “Advanced Options”. Find the “Reset” section, as shown in the picture below. Then click on the “Reset” button.
    Microsoft Edge Reset Settings


STEP 5: Scan with MalwareFox Antimalware

MalwareFox is antimalware that works on heuristic approach to detect and remove malware from your PC. It analyzes the malware signatures as well as their behaviour. If a program acts like a malware then MalwareFox blocks it right there. It is lightweight on your system resource and finishes the scan quickly.

Its not like I am recommending you to install a costly software to remove the malware. The MalwareFox subscription charges are fairly low. But that is for a fully featured program with real-time protection capabilities. The scanning works even with the free version, though you can try the MalwareFox Premium for 14 days. Also, you don't need to remove your current antivirus, MalwareFox will work effectively without any conflicts.

  1. Download MalwareFox.

    You can download MalwareFox by clicking the link below.

    MALWAREFOX DOWNLOAD LINK
    (The above link will open a new page from where you can download MalwareFox)
  2. Double-click on the MalwareFox setup file.

    Once the MalwareFox is downloaded, double click on MalwareFox.exe file to install it on your PC. The downloaded files are mostly saved to the Downloads folder.

    Double Click on MalwareFox.exe to Install MalwareFox
    You will see an User Account Control pop-up asking if you want to allow MalwareFox to make changes to your device. Click on “Yes” to proceed with the installation steps.
    Windows asking for permission to install MalwareFox

  3. Follow the on-screen prompts to install MalwareFox.

    First MalwareFox installer ask you to choose the language, select your preferend language and click on OK.
    MalwareFox Installation - Select Language

    Then the MalwareFox installation Wizard appears, click on Next and follow the screen instructions to setup MalwareFox on your PC.
    MalwareFox Installation Wizard - Click Next

    Once the installation is complete, MalwareFox will download the latest version and virus signatures from the server. Let it update.
    MalwareFox is Installing

  4. Click on “Scan” Button.

    To perform a system scan, click on the “Scan” button.
    Start a scan with MalwareFox

  5. Wait for MalwareFox scan to complete.

    MalwareFox is now scanning your computer for adware, pop-ups, browser hijackers, and other malicious programs. This process can take a few minutes, so you can do some other work while it is scanning your PC, don't worry the PC won't get slow during the scan.
    MalwareFox scanning PC for malware

  6. Click on “Next”.

    Once the scan has completed, you will see the list of detected threats on your PC. To remove the malware that MalwareFox has found, click on the “Next” button.
    Click on the Next button to remove Trustedinstaller virus

    When the malware removal process is complete, you can close MalwareFox and continue with the rest of the instructions.


Your computer should now be clean. If you face any issues while removing Trustedinstaller Trojan then please comment down your problem. We will try to help you as much as possible.

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