How to Fix 0x80040154 Error In Microsoft Security Essentials


By Jack Lin

Update on


An error code, this large is bound to turn your head upside down. This is one of the errors in the operating system that shows up without any warning or signs. 0x80040154 can happen anytime on your computer.

Most reports show that many users faced this error after the smooth running of the PC. 0x80040154 is related to Microsoft security essentials.

If you face this error on your computer, you can’t open or uninstall the Microsoft security essentials. This error can show up at various stages of the windows.

The error code 0x80040154 is attached to the Microsoft security essentials. If a piece of software meddles with Microsoft security essentials, this collision would create 0x80040154 on your computer.

Sometimes this interference occurs when you have antivirus software installed on your computer. Usually, many security applications conflict with other security programs. These conflicts create plenty of errors on the computer.

The solution is easy, get rid of the Microsoft security essentials. But uninstalling this program from the list of programs and features won’t be so easy because it is not listed in the programs installed on your computer.

To do so, you have to follow a certain method to get rid of the 0x80040154 error from your computer.

Part 1. Top Solutions to Fix 0x80040154 Microsoft Security Essentials Error on Windows.

Method 1: Hitting System Restore

If you have recently installed some software that belongs to a third-party developer, then this could be more likely to start the 0x80040154 on your computer if you don’t know or remember the actual piece of software that you have installed on your computer.

Then the best thing to do to deal with this error is to take Windows back to the first step. There is only one way you can do it without losing any data by clicking system restore.

System restore is another variation of formatting, but it doesn’t delete any of your data; it just sets the operating system back to normal. Will restore the Windows to its earlier point.

By doing this, you will get rid of all the errors that you are facing on your computer. This will also reset the PC to its earliest version. That means you will lose all of the software that you installed on your computer.

On the positive side, you will enjoy a healthy pc without any errors slowing the performance down.

If you want to restore your system, so it can perform better, then here are all the necessary steps you will need to fix the computer.

  • Hold Windows + R to open Run.
  • Inside the search box, type in rstrui.exe and then press Enter.
Run rstrui.exe
  • This will take you to the Restore system files and settings option; click Next to continue.
System Restore
  • Now please select the restore to go back to, and click Next.
select the restore
  • That’s it. Hit Finish, then click on Yes.
Confirm your restore point

Method 2: Antivirus Programs.

Many antivirus software can interfere with Microsoft essential this would create 0x80040154 on your computer in a matter of time if you have any antimalware programs installed on your computer.

To fix the error 0x80040154, you need to turn these programs off. Nowadays, many users have more than one antimalware program installed on their computers.

As the internet takes a bigger shape, it is increasing the concern for the user base. If you don’t know what type of antimalware system you have on your computer, there is a way to find it out and delete it by launching a feature.

Follow the steps below to remove the antimalware services from your computer.

  • First, you have an open run. Press Windows + R to make it happen.
  • Inside the search box, type in “appwiz.cpi” and press Enter.
  • Here you will have to locate the antimalware program once you find all the antimalware programs installed on your computer. Click on it and then press uninstall.

Sometimes when you purchase a computer from a local store or online, they would have installed antimalware software inside the system. Deleting this software is the right way to deal; with 0x80040154 on your computer.

Notice- there are plenty of antimalware tools that won’t let you uninstall them for security concerns. In these cases, you have to download a third-party uninstaller software or launch the uninstaller after a perfect safe boot to get on with the regular process.

Antimalware software is notorious for blocking important software on the computer and letting important viruses pass inside the computer. Disabling them is the only way you can deal with this problem.

Also, click here to find out how to fix the 0x0000000a error with ease.

Method 3: Removing Microsoft Security Essentials to Fix 0x80040154

Here is a simple way you can remove the Microsoft security essentials from the system. Please follow the below steps.

  • Press Windows + R. to open up Run.
  • Type In Notepad and then press Enter.
Run Notepad
  • Then copy the following codes in there.

cd /d “%ProgramFiles%\Microsoft Security Client”

setup.exe /x

TASKKILL /f /im MsMpEng.exe

TASKKILL /f /im msseces.exe

net stop MsMpSvc

sc delete MsMpSvc

REG DELETE “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\MsMpSvc” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Antimalware” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Security Client” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Microsoft Antimalware” /f

REG DELETE “HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Current Version\Run\MSC” /f

REG DELETE “HKEY_CLASSES_ROOT\Installer\Products\4C677A77F01DD614880F352F9DCD9D3B” /f

REG DELETE “HKEY_CLASSES_ROOT\Installer\Products\4D880477777087D409D44E533B815F2D” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Security Client” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{774088D4-0777-4D78-904D-E435B318F5D2}” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{77A776C4-D10F-416D-88F0-53F2D9DCD9B3}” /f

REG DELETE “HKEY_CLASSES_ROOT\Installer\UpgradeCodes\1F69ACF0D1CF2B7418F292F0E05EC20B” /f

REG DELETE “HKEY_CLASSES_ROOT\Installer\UpgradeCodes\11BB99F8B7FD53D4398442FBBAEF050F” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\4C677A77F01DD614880F352F9DCD9D3B” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\4D880477777087D409D44E533B815F2D” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UpgradeCodes\11BB99F8B7FD53D4398442FBBAEF050F” /f

REG DELETE “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UpgradeCodes\1F69ACF0D1CF2B7418F292F0E05EC20B” /f

takeown /f “%ProgramData%\Microsoft\Microsoft Antimalware” /a /r

takeown /f “%ProgramData%\Microsoft\Microsoft Security Client” /a /r

takeown /f “%ProgramFiles%\Microsoft Security Client” /a /r

REM Delete the MSE folders.

rmdir /s /q “%ProgramData%\Microsoft\Microsoft Antimalware”

rmdir /s /q “%ProgramData%\Microsoft\Microsoft Security Client”

rmdir /s /q “%ProgramFiles%\Microsoft Security Client”

REM Stop the WMI and its dependency services

sc stop sharedaccess

sc stop mpssvc

sc stop wscsvc

sc stop iphlpsvc

sc stop winmgmt

REM Delete the Repository folder.

rmdir /s /q “C:\Windows\System32\wbem\Repository”

sc stop


  • Save the file as ‘mseremoval.bat’ with the quotes. Don’t remove the quotes if you don’t want to uninstall the essential security software from the computer. Save the file.
Save the file as 'mseremoval.bat'
  • Go to the file (notepad), right-click on it, and then press Run. This will remove the Microsoft security essential from your computer.

Method 4: Command Prompt

You can use the CMD to remove the 0x80040154 error from your computer. Follow the steps below to remove it through CMD.

  • Press Windows + R to open Run.
  • Type in regedit.exe and then press Enter.
run regedit
  • In the registry editor, click on HKEY_LOCAL_MACHINE.
  • Here you have to take a deep dive by going.

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Microsoft Security Essentials.

  • Right-click on the Microsoft Security Essentials and hit delete.
  • Then open up CMD through the run, but this time instead of pressing the Enter key to launch. Press Ctrl + Shift + Enter.
  • Type in CD C:\program files\microsoft security client\backup\x86
  • Type exe /u and then hit enter.

This will uninstall the Microsoft security Essential error from the system.

In addition, here are the best fixes for you to fix the 0x80041003 Error on Windows.

Method 5: Using Microsoft Fixit Tool

You can use the Fixit tool to remove the Microsoft Security Essentials from the computer.

  • Download the Microsoft Fixit Tool.
  • Once the download finishes, click on the download file.
  • Here select the ‘Detect problems and let me select the files to apply.’
  • Click the Uninstall option.
  • Then select Microsoft security client and then hit next.
  • Repeat the steps, but this time select Microsoft antimalware, then click next to finish the process.

This will remove the Microsoft Security Essential and 0x80040154 errors from your computer.

Method 6: Resetting the system

If any of the methods in the list didn’t do the trick. Then the last option you can choose to fix the problem is resetting the windows.

That means formatting the whole HDD; this will get rid of all the important software and perform a clean install of the windows in the system.

Before you start thinking about formatting the whole drive, create a backup of the HDD on a flash drive or DVD.

If you have important files on your computer, then it is better to back up these files before resetting the PC.

When you reset, you will lose all the files and valuable information from your local drive. Resetting will clean the whole drive from different malware and your personal files.

And, of course, backup comes at risk; you have more chance of keeping the infected files with you in the backup USB drive and folder if you are not careful with your files. That’s why to do it at your own risk. If one file is infected on your computer, then the chances are other files are infected too.

Keeping that file safe in a drive will soon spread the infection to others in just a matter of time. If you have decided to create a backup of your system, do it at your own risk, it is recommended to keep all the informative data on another disk and then hit a clean format on the local drive.

This will erase all the potential malware and malware-infected software (0x80040154) and files from your drive in an instant.

When you boot up your windows with the bootable USB windows USB drive, don’t press the repair of the windows option. This won’t change the behavior of the computer. You have to format the whole HDD to remove the infected files of system files inside the computer.

You can use a bootable USB drive or CD/DVD to install Windows on your computer. This will require you to go to the BIOS setting and select the priority option for the boot to the USB or DVD.

Once you have selected the proper boot device, just go ahead and hit Save & exit. This will trigger a restart, but this time it will take you to the windows inside the bootable drive.

Part 2. How to Fix Outlook Error 0x80040154 on your Windows

The problem code 0x80040154 goes beyond the threshold of the Microsoft security essential. Many users have reported seeing this error on their outlook service on windows OS. The problem only occurs when an email is being sent from one computer.

The main reason why people are 0x80040154 seeing this error on their Outlook is if they recently upgraded their Microsoft office from 2007 to the latest version. And is when a user wants to download mail from an Outlook account to Windows.

If you see the error code 0x80040154 on your Outlook, it can happen for a variety of reasons. Some of them are:

  • The problem in your Outlook configuration that is why you receive the error code when you download emails.
  • Using a third-party add-in or external program can interfere with the normal basic function of Outlook. This can be a basic extension to increase the performance of an antivirus tool that makes your computer more secure. These tools have a history of interrupting the main program flow.
  • An unregistered DLL file leads to the 0x80040154 code in your outlook service.
  • If you face any issues installing Office, this could be one of the reasons for the error.

As you can tell, there are a variety of reasons why you see the error code 0x80040154 on your outlook service.

Don’t worry; below are all the points you need to follow to solve the error, so you can go back to how it was before.

Method 1: Using Microsoft Support and Recovery Assistant Utility

Sometimes the solution is right there, Microsoft Support and Recovery Assistant Utility will help you digons the problems, and it will also identify the problem in the outlook configuration settings.

Solve 0x80040154 Error Using Microsoft Support and Recovery Assistant Utility
  • Select Outlook, then click on Next.
Select Outlook, then click on Next
  • This will ask you for confirmation if you want to perform the action on the affected machine, then hit yes.
Confirm yes to affected machine
  • This will take you to the Let’s get started fixing your problem window, where you provide all the necessary information to continue the process — things like email and password you have to input to continue.
Sign in with email
  • And this will take several minutes to scan; after this, it will list all the problems with your outlook system on display.
Review Outlook configuration

Method 2: Registering Your Files to Fix 0x80040154

You can register the files to avoid 0x80040154 on your outlook app. Follow these simple steps to eliminate the error from your Outlook.

  • Open Run by pressing Windows + R together.
  • Here type in ‘regsvr32inetcomm.dll‘. You can delete the file to fix the problem on your Outlook. This will also help you register the file.

FAQs (Frequently Asked Questions)

Q: What is Microsoft Security Essentials?

A: Microsoft Security Essentials is a free antivirus program provided by Microsoft for Windows operating systems. It helps protect your computer from viruses, malware, and other malicious threats.

Q: Can I use Microsoft Security Essentials on Windows 10?

A: No, Microsoft Security Essentials is not available for Windows 10. However, Windows 10 comes with Windows Defender, which provides similar antivirus protection.

Q: I’m still experiencing the 0x80040154 error after trying the solutions. What should I do?

A: If none of the solutions mentioned in this article resolved the 0x80040154 error, it is recommended to seek further assistance from Microsoft support or consult with a computer technician who can diagnose and troubleshoot the issue.

Q: Is it necessary to have antivirus software installed on my computer?

A: Yes, having antivirus software is crucial for protecting your computer and personal data from online threats. It helps detect and remove viruses, spyware, and other malicious software that can compromise your security.

Q: Can I have multiple antivirus programs installed on my computer?

A: It is generally not recommended to have multiple antivirus programs running simultaneously as they can conflict with each other and cause performance issues. Choose a reputable antivirus software and stick with it.

Q: How often should I update Microsoft Security Essentials?

A: It is important to regularly update Microsoft Security Essentials to ensure that you have the latest virus definitions and software improvements. Set it to automatically update or manually check for updates at least once a week.


After you follow the above guides, you will know what to do if you face the error code 0x80040154 on your local computer or your outlook profile. Mainly, this error is unusual configuration files, infected files, and software.

Backing up will seem a good idea, but there is a chance that you will back up the infected files too inside your recovery drive or DVD. Make sure not to back everything up, just the files you need later. 0x80040154 can be persistent on the computer.

Follow all the methods to remove the error as fast as possible from the computer.


10 years of experience in information and computer technology. Passionate about electronic devices, smartphones, computers, and modern technology.