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How To Fix Error 0x8007043C: Microsoft Security Essentials (Windows Defender) Update Issue

0x8007043c

Fix 0x8007043c Microsoft Security Essentials: Out here we are gonna talk about Error 0x8007043C. How and why does it occur and how to get rid of the whole thing  once and for all! So, let’s get going with the stuff related to what, why, how to solve (solution), etc!

Error Number: 0x8007043C
Error Name: Microsoft Security Essentials Error 0X8007043C
Error Description: A program you are trying to run does not work in safe mode.
Developer: Microsoft Corporation
Software: Microsoft Security Essentials
Applies to: Windows XP, Vista, 7, 8

ox8007043c Error: What, How, Why, Solution/Fix

0x8007043c

How to know if you have got Error 0x8007043C with you!

  • “Error 0x8007043C” comes all of a sudden and stops the running program window.
  • This system of yours crashes with Error 0x8007043C a lot many times when running the same program again and again.
  • “Microsoft Security Essentials Error 0X8007043C” is shown every time.
  • Windows runs erratically and responses are very slowly to mouse and keyboard inputs you are giving.
  • Your system momentarily freezes for a few seconds sometimes.

These 0x8007043C errors do appear number of times and various processes/locations including during program installation, when a Microsoft Corporation-related software is being used, during booting Windows or shutting it down, or even sometimes even during the installation of the Windows operating system. Having a quite clear idea of when the 0x8007043C error occurs is an important piece of information in getting rid of  the whole problem from its root cause.

Check: what is wsappx?

What is the reason/cause of Error 0x8007043C

  • Not correctly downloaded or incompletly installed Microsoft Security Essentials program.
  • Corruption in registry of the windows due to a recent Microsoft Security Essentials-related software change may be installation or uninstallation or upgradation.
  • Virus or malware intrusion recntly which has somehow corrupted Windows system files or Microsoft Security Essentials software files.
  • some other software which unknowigly, maliciously or mistakenly deleted Microsoft Security Essentials-related files.

0x8007043c error is one of the Windows runtime errors which occurs due a variety of reasons. So, finding its root cause is the first step in stopping from its reoccurence.

Operating System Information

0x8007043C error messages can occur in any of the following Microsoft operating systems:

  • Windows 10
  • Windows 8
  • Windows 7
  • Windows Vista
  • Windows XP
  • Windows ME
  • Windows 2000

Fixing Microsoft Security Essentials Error 0x8007043C

There are many ways to get rid of Microsoft Security Essentials Error 0x8007043C and now we are gonna have a look at them one by one. We will try to solve the problem in following ways:

Step 1: Repair Registry Entries Associated with Error 0x8007043C

Editing the registry of the Windows OS to remove invalid Error 0x8007043C keys is not something which i would recommended only if you are the expert out here and actually know what and why are you doing.

Changing your OS’s registry improperly can result in stopping your PC from working as required and in worst case scenario, can even create some irreversible damage to your whole system. In fact, one comma placed at the wrong place can stop PC from even starting up. BOOM!

Due to such a large risk involved, we suggest that you go the method of using a reputed registry cleaner like that of  Reimage [download] to scan and repair any Error 0x8007043C-related problems in registry.

Using such registry cleaner softwares smoothens the process of finding invalid and corrupted registry entries, missing references of some file which may be causing your 0x8007043C error, and even broken links within the registry.

A backup is always created at the start of each scan, with the ability to undo any changes in a single click, which makes sure that you are protected against the possibility any permanent of PC damage. The thing is that repairing registry errors [download] can also help to exponentially improve system performance and speed.

Caution: Editing the registry of the Windows OS to remove invalid Error 0x8007043C keys is not something which i would recommended only if  you are the expert. DO NOT do anything otherwise and move to other methods.

To repair your Windows OS registry yourself [AT YOUR OWN RISK], first you ought to create a backup by exporting a part of the registry relating to Error 0x8007043C:

  1. Click the Start
  2. Type in the word “command” in the search box… DO NOT hit ENTER at this instance, read ahead!
  3. While pressing CTRL-Shift, hit ENTER.
  4. You will be prompted with a User Access Control dialog box.
  5. Simply you have to click Yes.
  6. Command prompt with the admistrative rights pops open, the typical black box.
  7. Type in “regedit” and then hit the ENTER.
  8. Registry Editor will open up and here you have to select the Error 0x8007043C-related key (eg. Microsoft Security Essentials) you would like to back up.
  9. From the File menu on the left top, choose the option labeled Export.
  10. From the Save Inlist, browse to the folder where in you would like to save the Microsoft Security Essentials backup key.
  11. In the File Name box, key in a name for your backup file, better put in  “Microsoft Security Essentials Backup”.
  12. In the Export Rangebox, you have to make sure that “Selected branch” is selected.
  13. Click on Save.
  14. The file will now be saved as a .reg file extension file in the selected location.
  15. You are now having a backup copy of your MSE-related registry entries which can well be used in case some unforeseen mishap.

Note: We don’t claim any responsibility.

  • Windows XP
    http://www.theeldergeek.com/windows_xp_registry.htm
  • Windows 7
    http://www.theeldergeek.com/windows_7/registry_edits_for_win7.htm
  • Windows Vista
    http://support.microsoft.com/kb/2688326 – LetMeFixItMyselfAlways

Step 2: Conduct a Full Malware Scan of Your PC

There are many a lot chances that your 0x8007043C error can be due to a malware infection or virus intrusion on your system. These harmful intruders may corrupt, damage, or may be even delete completely the Runtime Errors-relating files on the PC. Also, there is this possibility too that the 0x8007043C error you are iritated with is due to a component of the malicious program itself.

So, before you move on to poke into your registry, it’s bettere that you run a full system scan after updating your anti-virus software.

Tip: If this is the reason, then its quite evident that its high time now to get change of taste when it comes to anti-virus software you are using. There are many good softwares available, both free and paid ones. Emsisoft Anti-Malware offers malware removal guarantee.

Step 3: Clean Out Your System Junk (Temporary Files and Folders) With Disk Cleanup (cleanmgr)

Over long usage, our computer accumulates a lot of junk files from usual net surfing and regular computer usage. If this junk isn’t cleaned up at a regular basis, it can vary easily be the cause of MSE responding slowly or providing an 0x8007043C error, possibly due to file conflicts or an overloaded hard drive.

Getting rid of these temporary unwanted files using a Disk Cleanup tool will not only help you getting away with your 0x8007043C error, but can also exponentially speed up the working of your system.

Tip: Even though the Disk Cleanup is an awesome built-in utility tool, it will not clean completely all of the temporary stuff on your computer. Most tools that you more oftenly use such Firefox, Chrome, Microsoft Office, Live Messenger, and many of other programs are not cleaned up with Disk Cleanup (including other Microsoft Corporation programs).

Due to these loopholes in the Windows Disk Cleanup (cleanmgr) tool, we suggest that you should be using a specialized hard drive cleanup / privacy protection tool such as WinSweeper [download] to clean up your whole computer. Running WinSweeper once per day (use simply automatic scanner feature) will make sure that your system is always running fast, clean, and free of 0x8007043C errors related to temporary files.

How to run Disk Cleanup (cleanmgr) (Windows XP, Vista, 7, 8, and 10)
  1. Click on the Start
  2. Type in the word “command” in the search box… DO NOT hit ENTER at this instance, read ahead!
  3. While pressing CTRL-Shift, hit ENTER.
  4. You will be prompted with a User Access Control dialog box.
  5. Simply you have to click Yes.
  6. Command prompt with the admistrative rights pops open, the typical black box.
  7. Here you have to type “cleanmgr” and press ENTER.
  8. Disk Cleanupwill now start calculating how much disk space you will be able do away with.
  9. After that Disk Cleanup dialog box will appear with options in form of checkboxes you can choose according to your requirements. Most of the times, the “Temporary Files”category occupies most of the disk space.
  10. Check the boxes of the you would like to clean and click OK.

Step 4: Update Your PC Device Drivers

0x8007043C errors may be due to corrupt, not working or outdated device drivers on your system. Drivers can work one day, and may not the very next day, due to many unknown reasons. So, its better that you always keep your device drivers updated upto the brim.

Getting to know the exact driver causing the Error 0x8007043C is quite difficult task you won’t enjoy doing, even directly on the Microsoft Corporation or related manufacturer’s site. Even if you say that you are experienced at finding, downloading, and updating drivers yourself, the whole thing can still be very time consuming and obviously very  irritating. And not to forget that putting in the wrong driver, or an incompatible version of the right driver, can make things go south.

Because of these issues involved in updating drivers manually, we highly suggest you that you should be using a driver update tool such as DriverDoc to let the system itself do the task on just a single click of the button.

With updated device drivers, you can make sure that your system is always running fast, clean, and free of 0x8007043C errors related to temporary files.

Note: This error may not be related to device drivers, but ensuring updated drivers helps maximizing the PC performance.

Step 5: Utilize Windows System Restore to “Undo” Recent System Changes

Windows System Restore gives you opportunity to “go back in time” with for your PC to help you in fixing your Error 0x8007043C or any other problem for that matter. System Restore can help you get back to your PC’s system files and installed softwares and programs back to a state or time when everything used to work as it ought to. The so called good old days. This can really help you in avoiding long hours of troubleshooting trials with 0x8007043C errors.

Note: Use of System Restore feature will not affect your pictures, documents, or any other important data.

How to use System Restore feature on Windows XP, Vista, 7, 8, and 10:
  1. Hit the Start
  2. Go to the search box, key in “System Restore”and press ENTER.
  3. Results will be shown out of which you have to click on System Restore.
  4. Enter the passwords (if asked for by the UAC window).
  5. Go along with the steps in the Wizard and you will asked to choose a system restore point.
  6. Select the appropriate one and click Restore

Step 6: Uninstall and Reinstall the Microsoft Security Essentials Program Associated with Error 0x8007043C

f your 0x8007043C error is due to the malfunctioning of a specific program, installing again all the MSE-related softwares  may be the perfect solution at last.

How to Uninstall and Reinstall MSE for Windows 7 and Windows Vista:

  1. You have to go to Programs and Features from the Start
  2. Open Control Panel from the right side menu.
  3. Select Programs.
  4. Click on Programs and Features.
  5. Look out for Microsoft Security Essentials Error 0X8007043C-associated program which would in the Name
  6. Click on the Microsoft Security Essentials-associated entry.
  7. Select the Uninstall button from the top menu.
  8. Go along with the on-screen instrutions to complete the uninstallation of Error 0x8007043C-associated softwares.

How to do that for Windows XP:

  1. You have to go to Programs and Features from the Start
  2. Open Control Panel from the right side menu.
  3. Click on the Add or Remove Programs option.
  4. Locate Microsoft Security Essentials Error 0X8007043C-associated program under the list of Currently Installed Programs.
  5. Click on the Microsoft Security Essentials-associated entry.
  6. Select the Remove button from the right side.
  7. Follow the on-screen directions to complete the uninstallation of your Error 0x8007043C-associated program.

Instructions for Windows 8:

  1. Hover the cursor in the bottom left of the screento produce the Start Menu
  2. Right-Click to bring up the Start Context Menu.
  3. Click Programs and Features.
  4. Locate Microsoft Security Essentials Error 0X8007043C-associated program under the Name
  5. Click on the Microsoft Security Essentials-associated entry.
  6. Click the Uninstall/Change on the top menu ribbon.
  7. Go along with the on-screen instructions to complete the uninstallation of Error 0x8007043C-associated softwares.

.Tip: If you are sure that this error is caused due to some Microsoft program, then uninstall and reinstall it to solve the issue.

Step 7: Run Windows System File Checker (“sfc /scannow”)

System File Checker is a useful tool embedded with Windows that helps you scan for and restore corruptions in Windows system files (including those related to Error 0x8007043C).

How to use System File Checker for Windows XP, Vista, 7, 8, and 10:
  1. Hit the Start
  2. Type in the word “command” in the search box… DO NOT hit ENTER at this instance, read ahead!
  3. While pressing CTRL-Shift, hit ENTER.
  4. You will be prompted with a User Access Control dialog box.
  5. Simply you have to click Yes.
  6. Command prompt with the admistrative rights pops open, the typical black box.
  7. Here you have to put the exact code “sfc /scannow” and press ENTER.
  8. System File Checker will begin scanning for Error 0x8007043C and other system file problems (have patience – the PC scan may take a lot of time).
  9. Go along with the on-screen instructions to complete to complete the process.

Step 8: Install All Available Windows Updates

Microsoft is always in a spree to keep improving and updating Windows system files that could be the cause in any manner for the Error 0x8007043C. If you are in luck solving these Runtime Error problems may done just by simply updating Windows with the latest Service Pack or other patch that Microsoft keeps on releasing on the regular basis.

How to install latest Windows Updates (Windows XP, Vista, 7, 8, and 10):
  1. Hit the Start
  2. Key in “update” in the search box and press ENTER.
  3. Now the Windows Updatedialog box will appear.
  4. If you see that some updates are available to be downloaded, click the Install Updates
  5. It will take some time to download and then install the updates.

 

Step 9: Perform a Clean Installation of Windows

Caution: We make it clear here that reinstalling complete Windows OS is a very time-consuming and complex task to get rid of Error 0x8007043C problems. To make sure that you don’t loose data, you must be ensure that you have backed-up all of your needed pictures, documents, other personal data, and software installers before getting on with  the process. If you are not currently backing up your data, you need to do so now only to protect yourself against permanent data loss.

This method is your last option while trying to solve your Error 0x8007043C issue. Reinstalling Windows will delete everything from your hard drive, giving you an option to start again with a fresh system. Also, a clean install of OS will also quitly clean out all “junk” that has been collected over the long usage of your computer.

Please Note: If 0x8007043C errors is still present even after a clean install of Windows OS, your Runtime Errors problem is due to hardware problem or malfunction.

 

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