How to Fix Windows 10 Error Code 0xc004c008

The TWCU.EXE or TP-LINK Wireless Client Utility is a configuration application required to run wireless adapters successfully. The TP-LINK Wireless Client Utility application only exists on computers that are using the TP-LINK adapters. Upon the installation of this application, the service will be automatically added to the Windows service list that will continuously run in the background. The Twcu.exe is placed at the C:\Program Files\TP-LINKTP-LINK\Wireless Utility folder and is used by TP-LINK to connect to the internet. The name of the main executable file is twcu.exe and can be viewed in the Services tab of the Task Manager. If you are one of the users who just upgraded to Windows 10 from the previous Windows versions, then you’ll most likely see an error saying, “Failed to load the library file!” that has something to do with twcu.exe or TWCU. This error pops up when you go to your desktop and every time you log into your Windows 10 PC. Like pointed out, this error is related to the TP-LINK Wireless Client Utility and every user who is using the TP-LINK Wireless Client Utility is experiencing this problem which may be due to some compatibility issues especially when you start getting this error right after you upgraded to Windows 10. To fix this problem, follow each one of the options given below.

Option 1 – Try running in Compatibility Mode

The best thing you can do is to run the TP-LINK Wireless Client Utility in the compatibility mode since the problem is due to some compatibility issue. To run this utility in the compatibility mode, here’s what you have to do:

• Look for the TP-LINK Wireless Client Utility which should be located on your desktop.
• Once you find it, right-click on it and select Properties from the context menu.
• After that, go to the Compatibility tab and mark the checkbox for “Run this program in compatibility mode for:” and from the drop-down list, select either Windows 7 or Windows 8.
• Click the Apply button and then click OK to save the changes made and check if it has resolved the issue or not.

Option 2 – Try troubleshooting compatibility

This option is almost the same as the first one except it is an alternative way of fixing the TP-LINK Wireless Client Utility in case the first one didn’t work. In this option, you will troubleshoot the compatibility issue of the TP-LINK Wireless Client Utility.

• Look for the TP-LINK Wireless Client Utility which as mentioned, is on your desktop.
• Then right-click on it and select the “Troubleshoot compatibility” from the context menu.
• After that, click on the “Try recommended setting” option. Once the process is done, the error message should be gone.

If you are trying to connect to the internet using the Microsoft Edge browser but encountered an error message instead that says, “Can’t connect to the proxy server”, read on as this post will show you how you can fix this error. This kind of error in Microsoft Edge could be caused by incorrect proxy settings or worse, malware. To fix this error, here are some suggestions you need to check out:

Option 1 – Try to check your internet connection

The first thing you can do to resolve the “Can’t connect to the proxy server” error in Microsoft Edge is to check your internet connection. There are times when your internet connection or Wi-Fi router can cause such problems. In such cases, you have to ensure that you have a valid internet source and if you are using a Wi-Fi router, you can try to use another connection and then see if the error is gone or not.

Option 2 – Try to disable the manual proxy set up from the Settings

In case you miss it, there is actually an option in the Settings panel that you can use to set up proxy in your Windows 10 computer. So if you encounter the “Can’t connect to the proxy server” error, you should disable manual proxy for the meantime and check if it fixed the error or not.

• Tap the Win + I keys to open the Windows Settings.
• Then go to Network & Internet > Proxy.
• And on your right-hand side, ensure that the Automatically detect settings are enabled and that the Use a proxy server option under the Manual proxy setup is disabled.
• Now try to open any website again and see if the problem’s fixed.

Option 3 – Try disabling the VPN

Like pointed out earlier, if you are using VPN, this could be the reason why you’re getting the “Can’t connect to the proxy server” error so the most obvious thing to do is for you to turn off the VPN and try to load a website in Edge again. And if you use a VPN software that works using their software, you can just completely exit or log-off from its account. On the other hand, if you are using a built-in Windows 10 VPN, you can simply turn it off or delete all the settings you have created there.

Option 4 – Disable the proxy server for your LAN

If your PC was just attacked by some adware or malware as of late, it is possible that it has changed the network settings in the system and might display spam advertisements. Thus, you have to disable the proxy server for your LAN. To do that, refer to these steps:

• Tap the Win + R keys to open the Run dialog box.
• Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
• After that, go to the Connections tab and select the LAN settings.
• From there. Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.
• Now click the OK and the Apply buttons.
• Restart your PC.

Note: If you are using a third-party proxy service, you have to disable it.

Option 5 – Temporarily disable Firewall and third-party antivirus

Firewall and antivirus programs are known to block files the instant it detects a threat to the system. However, there are some cases when it can also block a file even when it’s a safe one. Thus, your antivirus or firewall programs might be the reason why you can’t download anything on your Windows 10 computer. To isolate the issue, you need to temporarily disable both the Firewall and antivirus programs and then check if you can now download anything from the internet. Do not forget to enable them again as disabling them can leave your computer vulnerable to cyber threats.

Option 6 – Clear the browsing data of Microsoft Edge

• Open Microsoft Edge.
• Then click on the three horizontal dots to open the menu.
• From there, click on Settings. And under Settings, click the “Choose what to clear” button under the Clear browsing data section.
• Next, check all the checkboxes and then click the Clear button to clear the browsing data in the Edge browser.
• Restart Edge.

Option 7 – Try to reset, repair or reinstall Edge via Settings

You can reset, repair or reinstall the Edge browser through Settings. If none of it helped, you can try the following:

• Open File Explorer and then go to this path – C:/Users/YourUsername/AppData/Local/Packages

Note: Before you type in the path in the Address bar, make sure that you put your user account name in place with the “YourUsername”.

• Tap Enter to proceed.
• Next, look for the folder named “MicrosoftEdge_8wekyb3d8bbwe” then right-click on it.
• Click on Properties and uncheck the option “Read-only” under the General tab in the Properties window.
• Click on Apply and then OK to save the changes made.
• After that, look for the MicrosoftEdge_8wekyb3d8bbwe folder again and delete it. And if a prompt stating “Folder Access Denied” appears on your screen, just click on the Continue button to proceed – doing so will delete most of the content inside the folder except for the folder named “AC”.
• Restart your PC.
• Now all you have to do is to re-register Microsoft Edge using PowerShell. In the Start Menu, search “Windows PowerShell”.
• Right-click on Windows PowerShell from the search results and select the “Run as administrator” option.
• Type in this command in the PowerShell windows and tap Enter – Cd C:/Users/YourUsername

Note: Once again, make sure that you key in your user account name in place of “YourUsername.

• After that, type in this command and tap Enter – Get-AppXPackage -AllUsers -Name Microsoft.MicrosoftEdge | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)AppXManifest.xml" -Verbose}
• Restart your PC.

Option 8 – Scan your computer for malware using Windows Defender

Your computer could be infected with malware which might have triggered the “Can’t connect to the proxy server” error. To fix this, you need to scan your computer using a reliable program like Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.

Code 24 - What is it?

You may experience error code 24 when you try to use a device on your PC that is not properly installed or its driver is corrupted. Code 24 is a Device Manager error and it pops up on your computer screen in the following format:

“This device is not present, is not working properly, or does not have all its drivers installed. (Code 24)”

Solution

Error Causes

Error code 24 may be triggered due to several reasons. However, the most common causes for this error code include:

• Incorrect device installation
• Hardware failure/ conflict
• Corrupted or outdated driver
• Device prepared for removal

It is recommended to resolve the error code to ensure your PC works at its optimal performance. Error code 24 can lower the device functionality and PC performance dramatically.

Further Information and Manual Repair

Since this error code can mean several different things, troubleshooting it can be quite tricky but to make it simple to resolve, we have listed down some easy methods to repair error code 24.

Try these methods to fix error 24 on your PC and ensure your system works at its optimal pace. Let’s get started….

Method 1 - Update the BIOS on Your Motherboard

Problems with BIOS, the controlling software in the PC motherboard, can sometimes trigger hardware conflicts resulting in Device Manager error code pop-ups.

In such a scenario, it is advisable to update BIOS. To update, go to your PC motherboard manufacturer’s website. Here you will be able to find instructions on updating BIOS.

Follow the instructions carefully to resolve error code 24 on your system. If the error code still persists, then try other methods discussed below.

Method 2 - Remove New Devices

If you experienced code 24 on your PC after installing new devices, then it is advisable to remove them to resolve the error code.

If the device is attached to your computer, then simply disconnect and remove it immediately. Once you disconnect it, reboot your system to activate changes.

Method 3 - Update Drivers

If device removal does not resolve the problem, then consider updating the device driver. Code 24 is also related to driver problems.

It can occur if a device driver is corrupted or outdated. In such an event, it is advisable to update the driver by installing the new and latest device driver version on your PC.

For doing this, simply download the latest device driver version from the manufacturer’s website and update it.

Method 4 - Install DriverFIX for Both Device Driver Update and Safe Device Removal

Finding problematic drivers and the latest device driver versions to update them, however, can be time-consuming and sometimes even frustrating. To avoid being in this situation, it is advisable to download DriverFIX.

DriverFIX is a cutting-edge, user-friendly and an innovative program exclusively designed to resolve device driver related issues and problems on computer systems

It is integrated with the newest technology and intelligent programming system that enables and empowers PC users like you to repair device driver error codes in seconds.

Once you install this software on your PC, simply run it. The software program instantly detects all problematic drivers and updates them with their latest versions available on the internet.

All this is done in mere seconds and it’s not time-consuming at all. Moreover, device driver updates are performed frequently to ensure that you don’t experience any driver problems again.

• With this software on your PC, you don’t have to worry about updating drivers regularly.
• In addition to this, as we discussed above, driver code 24 can also occur due to new plugged-in devices. If that’s the reason, then DriverFIX can help you resolve this problem too.
• It can help you manage and unplug USB devices safely from your PC. After installing DriverFIX, unplugging USB devices is easy and you don’t have to worry about data corruption or drive damage.
• DriverFIX manages USB devices smoothly by making the ejecting process easy and safely removes hardware from your PC, thereby resolving error code 24 in no time.
• DriverFIX is easy to install and use and is compatible with all Windows versions.

Click here to download DriverFIX and repair Device Manager error code 24 right away.

If you recently upgraded your computer or if you’ve just switched to a new Windows 10 PC, the most common errors you might encounter are the Windows Activation errors. This issue boils down to the Windows Activation server which has either failed to validate or recognize the license tied to the digital account. In this post, you will be guided on how to fix an activation error in an organization with an error code 0x8007007B. It contains this exact error message: “We can’t activate Windows on this device as we can’t connect to your organization’s activation server. Make sure that you’re connected to your organization’s network and try again. If you continue having problems with activation, contact your organization’s support person. Error code 0x8007007B.” Various computers are activated via the KMS licensing (Key Management Server) in organizations. Computers that are activated using this process do not get a permanent activation and have to stay connected to the organization instead of for at least 7 months or 180 days. It is common in Pro and Enterprise versions that are deployed in bulk for at least hundreds or thousands of computers. So imagine a user with a personal computer in the office who decided to leave the organization but will still have an activated Windows key. And so to prevent that from happening, organizations use the KMS licensing. Another possible cause of the error is in case some user used an organization key and later on, the PC just got upgraded or downgraded to a version that is not compatible with that copy of Windows. To fix this Windows Activation error, here are some suggestions that might help.

Option 1 – You can try connecting to the organization’s network and activate the computer. But before that, you need to first check if the computer actually belongs to an organization or not.

• Tap the Win + R keys to open the Run dialog box.
• Type “cmd” and hit Enter to open an elevated Command Prompt.
• After that type the vbs /dlv command and hit Enter to execute it.
• Next, check if the Product Key Channel says “GVLK”. If it does, then it means that your computer was activated using volume licensing.

Option 2 – Change Licence Key

If you’ve recently left an organization then it’s best if you buy another copy of Windows 10 and then change the license key. This time, make sure that the license key is for the same version of Windows. However, if it’s different, you need to format your computer.

Option 3 – You can try activating Windows 10 using a mobile phone

Activating Windows 10 can also be done using your phone. Just note that you have to call Microsoft to do so.

• In the Start Search box, type in “Slui 4” and tap Enter.
• Next, select your country and click on Next.
• Keep the window open and call the toll-free number of the country you’re from.
• Afterward, a confirmation ID should be given by the automated system which you must take a note of.
• Finally, in the box on the window, type in the confirmation ID and click on the Activate button. That should do it.

Option 4 – If you think that the issue is caused by some hardware changes, you can try using the Activation Troubleshooter.

There are times when users already have the license keys and were able to activate Windows. However, it doesn’t last long and only works for a while and it’s suddenly throwing up an activation error like this one. To use the Windows Activation Troubleshooter, just go to Settings and to Activation and then run the troubleshooter from there. If you've made some modifications to your hardware, you have to click the “I changed hardware on this device recently” option for further suggestions.

Error Code 28- What is it?

The error code 28 is a driver error. This is one of the many device manager error codes. When this error occurs on your computer, the following message is displayed:

“The drivers for this device are not installed. (Code 28)”

Another driver device error message you might encounter is error code 41. 

Error Causes

Error 28 occurs because of unsuccessful device driver installation. This usually happens when you try to update new drive versions on your system. It is advisable to repair this error right away as it can hamper your ability to use certain hardware. For example, if error 28 occurs due to the unsuccessful installation of the USB driver, then it if not fixed and resolved it may prevent you from using hardware devices. Unsuccessful driver installation means you either didn’t install it properly or your computer has registry issues. If it’s the registry then you must fix it without any delay because it can expose your PC to serious threats like system crash and failure. To avoid such inconvenience, repair it.

Further Information and Manual Repair

When it comes to repairing the error code 28, here’s what you can do: Simply go to the control panel and click on the Device Manager option:

• In the details pane with the list of devices, locate the device for which you want to reinstall the driver software.
• Double click on it to open the properties dialog box.
• Now click on the driver tab and then click update driver.

After updating, try using that device again if it doesn’t work and shows the error code 28 on your computer screen then this means the underlying cause is the registry.

WeatherBlink is an extension for google chrome, Mozilla, and internet explorer. It allows users to check out the weather anywhere in the world at any time. This might seem like a convenient feature, however, this toolbar also displays unwanted ads, hijacks your browser home page, collects personal data about your web surfing habits, visits, and clicks. From the author: Access local weather forecasts, weather radar, allergy, and pollen reports, and worldwide weather news – all in one convenient spot! This extension configures your New Tab page to WeatherBlink™ to provide these features.

Be prepared with instant weather forecasts. Access FREE and accurate weather forecasts with one click!

About Browser Hijackers

Browser hijack is a very common type of online fraud where your web browser settings are modified to make it do things you do not intend. Browser hijackers can do more than simply modifying home pages. It redirects you to the sponsored internet sites and inserts ads on the internet browser that helps its creator generate ad revenue. A lot of people assume that these kinds of websites are legitimate and harmless but that is not true. Nearly every browser hijacker poses an actual threat to your online safety and it is necessary to classify them under privacy dangers. In a worst-case scenario, your internet browser could be hi-jacked to open up your computer to a host of additional computer infections.

Indications of browser hijack

Below are some symptoms that indicate you’ve been hijacked: 1. the browser’s home page is changed 2. bookmark and the new tab are also modified 3. default online search engine is modified 4. you see unwanted new toolbars added 5. you notice a lot of pop-ups on your computer screen 6. web pages load very slowly and often incomplete 7. you’ve disallowed entry to particular web pages, for example, the website of an antimalware software firm like SafeBytes.

So how exactly does a browser hijacker infect a computer?

A browser hijacker could be installed on your PC when you go to an infected website, click an email attachment, or download something from a file-sharing website. They also come from add-on applications, also referred to as browser helper objects (BHO), browser extensions, or toolbars. Sometimes you may have mistakenly accepted a browser hijacker as part of a software program bundle (usually freeware or shareware). Typical examples of browser hijackers include CoolWebSearch, Conduit, RocketTab, OneWebSearch, Coupon Server, Searchult.com, Snap.do, and Delta Search.

Tips on how to remove browser hijackers

Certain browser hijacking can be easily stopped by discovering and eliminating the corresponding malware application from your control panel. However, certain hijackers are more difficult to find or eliminate as they might get themselves associated with certain crucial system files that enable it to work as a necessary operating-system process. You should think about carrying out manual repairs only if you’re a tech-savvy person because there are possible risks associated with fiddling around with the system registry and HOSTS file.

How One Can Eliminate Malware that is Blocking Websites or Preventing Downloads

Malware could potentially cause several different types of damage to PCs, networks, and data. Certain malware goes to great lengths to prevent you from downloading or installing anything on your PC, especially anti-malware applications. If you’re reading this, you probably have got infected by a virus that prevents you from downloading security software like Safebytes Anti-Malware. There are a few fixes you could try to get around with this issue.

Start Windows in Safe Mode

Safe Mode is actually a unique, basic version of Windows where just essential services are loaded to counteract malware as well as other problematic programs from loading. In the event the malware is blocking access to the internet and affecting your PC, launching it in Safe Mode enables you to download anti-virus and run a diagnostic scan while limiting possible damage. To start the computer into Safe Mode, hit the “F8” key on your keyboard right before the Windows logo screen comes up; Or after normal Windows boot up, run MSCONFIG, check Safe Boot under Boot tab, and click Apply. Once you restart into Safe Mode with Networking, you may download, install, as well as update anti-malware software from there. At this point, you could run the anti-malware scan to eliminate computer viruses and malware without any interference from another application.

Switch over to an alternate browser

Some malware may target vulnerabilities of a specific browser that block the downloading process. The most effective solution to avoid this problem is to pick a browser that is renowned for its security features. Firefox has built-in Phishing and Malware Protection to help keep you secure online.

Install antivirus on a thumb drive

To effectively remove the malware, you have to approach the problem of running an anti-malware software program on the affected computer from a different angle. Adopt these measures to run the anti-virus on the affected computer. 1) Download Safebytes Anti-Malware or Windows Defender Offline onto a virus-free computer system. 2) Plug the USB drive into the clean PC. 3) Double-click the Setup icon of the anti-malware program to run the Installation Wizard. 4) When asked, choose the location of the USB drive as the place in which you would like to store the software files. Follow activation instructions. 5) Unplug the flash drive. You may now utilize this portable anti-virus on the infected computer. 6) Double-click the Safebytes Anti-malware icon on the flash drive to run the program. 7) Press the “Scan Now” button to begin the virus scan.

SafeBytes Anti-Malware: Lightweight Malware Protection for Windows Computer

Do you want to install the best anti-malware software for your computer system? There are plenty of applications available in the market which comes in paid and free versions for Microsoft Windows computers. A few of them are good, some are ok types, while some will damage your computer themselves! You need to be careful not to select the wrong application, particularly if you purchase a paid application. On the list of recommended software programs is SafeBytes AntiMalware. SafeBytes has a very good track record of top-quality service, and customers seem to be very happy with it. SafeBytes can be described as a powerful, real-time anti-spyware application that is made to assist the common computer end user in safeguarding their PC from malicious internet threats. Using its cutting-edge technology, this application can assist you to get rid of multiples types of malware which include computer viruses, PUPs, trojans, worms, ransomware, adware, and browser hijackers. SafeBytes has a variety of features that can help you protect your PC from malware attacks and damage. Below are a few of the great ones: Antimalware Protection: With a critically acclaimed anti-malware engine, SafeBytes gives multi-layered protection which is intended to find and eliminate viruses and malware that are concealed deep in your computer’s operating system. Real-time Threat Response: SafeBytes provides round-the-clock protection for your PC restricting malware intrusions in real-time. It’ll regularly monitor your laptop or computer for hacker activity and also gives users sophisticated firewall protection. Quick Multi-threaded Scanning: SafeBytes’s high-speed malware scanning engine lessens scan times and extends the life of the battery. At the same time, it’ll effectively detect and get rid of infected computer files or any internet threat. Internet Security: Safebytes allots all sites a unique safety score that helps you to get an idea of whether the website you’re just about to visit is safe to browse or known to be a phishing site. Low CPU/Memory Usage: SafeBytes is well known for its minimal influence on computer resources and great detection rate of numerous threats. It works quietly and efficiently in the background so you are free to utilize your computer or laptop at full power all the time. 24/7 Customer Support: You will get 24/7 technical support to promptly resolve any problem with your security tool.

Technical Details and Manual Removal (Advanced Users)

To remove WeatherBlink manually, go to the Add or Remove programs list in the Control Panel and select the program you want to get rid of. For internet browser plug-ins, go to your browser’s Addon/Extension manager and select the plug-in you want to remove or disable. You will probably also want to reset your internet browser. Finally, examine your hard drive for all of the following and clean your registry manually to remove leftover application entries after uninstallation. Please remember that only experienced users should try to manually edit the registry because incorrect file deletion results in a major problem or perhaps a PC crash. Furthermore, certain malware is capable of replicating or preventing deletion.

Carrying out this malware-removal process in Safe Mode is recommended.

Once a tedious and unfriendly task of installing fonts has been severely made easier and more user-friendly. As technology advances daily so do some tasks. One of these tasks which today look unnecessarily complicated is fonts installation in Windows. What was once complicated navigation to control panel with an administrative account, today is two-click with the mouse anywhere, well anywhere on your hard drive, but still a great improvement nonetheless. Ok, so you have found cool new font which you like very much and you are eager to try it out, but how do you install it in Windows so your other software can find it and use it? The task is incredibly easy, let's presume that you have downloaded desired font or fonts to your hard drive from the internet, they are nicely placed in a folder, all you have to do is select which one you would like to install, right-click on any one selected and click on install. That's it, that is all that you need to do. Now in order to remove fonts first, you will have to go to the folder which has all fonts installed in the system. The location of this folder is conveniently enough c:\Windows\Fonts. In there select all fonts that you would like to uninstall from the system and simply delete them, that's it.

If you have a USB that has stopped working and does not show any signs of life do not throw it away just jet. Hello and welcome to another great tutorial on errortools.com, today we will explore how to bring back to life dead USB memories.

Detect a Corrupted  Drive:

If your computer is still able to detect your USB drive, you might want to know if it’s been corrupted. Select the Properties of the drive folder and check the device status. If it says This device is working properly this USB drive is worth saving. There’s no need to worry if you can’t see the USB drive folder.

Erase the USB Drive with Diskpart Tool

Press ⊞ WINDOWS + X top open start menu and choose Command prompt (admin) Type diskpart and press ENTER Type in list disk and press ENTER Locate your USB drive by size and type in select disk#, where # is the number of removable disks.

Reallocate the USB Drive Volume

Press ⊞ WINDOWS + R to open the run dialog and type in diskmgmt.msc Select the USB drive and Right-click on it and select create simple volume. It will lead to a new simple volume wizard window. Once you click next, you can specify the volume size for the pen drive. Select the maximum volume, which is shown as a default unit in MB. As soon as you see the next step, select assign drive letter which will help you view your pen drive once again. Format the partition in the next step. This may be just an extra step because you have already wiped the data clean. But it is always better to be sure. Click Finish to complete the new simple volume wizard which will now be allocated to the USB drive. After you reallocate the unallocated USB drive space, you will be able to view the USB drive storage once again.

Error Code 0x80073afc - What is it?

Error code 0x80073afc deals with an antivirus program first built into Windows 8/8.1 This error occurs when Windows Defender, the built-in anti-virus software in Windows 8/8.1 and higher, does not start automatically and users attempt to manually start the program. During the initialization period of the program start-up, something goes wrong and users get a 0x80073afc Error message. The error message states there was a problem with the initialization of the program. Windows Defender provides protection of your computer and it is advised by the Microsoft Corporation that you ensure it starts up automatically on every start-up.

Solution

Further Information and Manual Repair

Users have found several manual repairs that have fixed the problem without needing to contact technicians for extra help. While the methods below should solve your problem easily, if this is the first time you have encountered the issue you may want to do a simple restart. This has fixed the problem for some users and is the easiest first troubleshooting move. If it doesn’t work move on to the methods listed below, which are easily completed without extra help.

Before trying any of these methods, please make sure that you are logged into a profile that is listed as the administrator of the computer of his administrative powers enabled. If this is not the case you will not be able to complete the following methods. Please log out and log back in on the administrator profile.

Method 1:

First, check to see if you have a third-party anti-virus program installed on your computer. Some users believe that the built-in Windows Defender program is not powerful enough to handle the safety of their computer so they usually download a third-party program. However, that program may have caused a conflict with Windows Defender and may not allow it to open. If you do have a third-party program installed, try uninstalling it then manually starting Windows Defender.

Method 2:

If method one does not work, you may be infected by malware or a virus that has tampered with the settings on your computer and will not allow Windows Defender to start automatically or manually.

First, open Run by holding the “Win” key and pressing the “R” key. Then type “Regedit”. The program will ask for permission to follow through with this action. Click on “Yes” and the Open Registry Editor will open.

Find the HKEY_LOCAL_MACHINESoftwareMicrosoftWindows NTCurrentVersionImage File Execution Option and check to see if there are any files similar to MSASCui.exe or MpCmdRun.exe. If there are any file entries that resemble that, you will want to right-click on them before selecting the “Delete” option. If you do not see any entries that match, this is not the issue with your Windows Defender and you will want to try another method.

The Registry on your computer is very important. It helps tell your computer what programs are safe to run, what programs should be run, and what programs should not be run. If it is tampered with by a virus or Malware, multiple system operations can be affected.

However, if you did find similar file names, and you deleted them, try to start Windows Defender manually. If it does not work again, move on to the next method. 

Method 3:

If the first two methods do not work for your issue, and you are still receiving error code 0x80073afc when attempting to start Windows Defender, this step should solve the problem if you have Restore Point installed on your computer, which you most likely do.

For this method, we will be restoring your computer to a previous Restore Point. First, just like in method two, hold the “Win” key and press the “R” key. This will open run. Next type “Rstrui.exe” and click “ok”. After some time, you will see System Restore Windows. Click “Next” and select the restore point that you would like to go back to. After your computer has restored to the point you selected, check to ensure that Windows Defender has started correctly.

If the above methods aren't able to rectify the issue, you might have to download and install a powerful automated tool to get the job done.

DLL files, also known as Dynamic Link Libraries are external parts of applications that run on Windows as well as other operating systems. Almost all applications are not complete in themselves and store code in different files. In this post, we will be discussing one DLL file called ntdll.dll. It is described as “NT Layer DLL” which means that it contains some Kernel functions that help in the normal functioning of the Windows operating system. It is created by Windows in the System32 folder when the OS gets installed. This file can serve different programs simultaneously by providing them with different Kernel functions which support the programs’ performance. However, if you encounter the ntdll.dll file error on your Windows 10 computer, read on as this post will guide you in fixing the problem.

Option 1 – Try to re-register the ntdll.dll file

You may have to re-register the ntdll.dll file using the regsvr32.exe before you can successfully install the program and fix ntdll.dll file crash error. The Regsvr32 tool is a command-line utility that can be used to register and un-register the OLE controls like DLL and ActiveX (OCX) control in the Windows operating system. Follow the steps below to use it.

• Open Command Prompt as admin from the WinX menu.
• Next, type the following commands in the elevated Command Prompt and hit Enter to execute the command. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
  • exe /u ntdll.dll
  • exe ntdll.dll
• You should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. After that, try to install the program again and see if it now works.

Option 2 – Disable problematic Internet Explorer add-ons

There are instances when some add-ons in the Internet Explorer browser can cause the ntdll.dll file crash error. Thus, you need to disable some add-ons in Internet Explorer and then check if it fixes the problem.

Option 3 – Try running the DISM tool

You might want to repair potentially corrupted files in your system as having them could also trigger the ntdll.dll file crash error. To repair these corrupted system files, you can run the DISM commands:

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the DCOM error is now fixed.

Option 4 – Try to run the Program Compatibility Troubleshooter

You might also want to run the Program Compatibility Troubleshooter. This built-in troubleshooter is available in the Windows Update & Security section. From there, select Troubleshoot. This will find a list of programs for you and since you have already downloaded the driver files, just click on Not Listed located at the top of the program list. After that, browse and select the driver files and then let the program do its job.

Option 5 – Try to replace the DLL file with a trusted source

• First, you need to get the new DLL file from another computer with preferably the same file version number.
• After that, you need to boot your PC into Safe Mode and navigate to the paths listed below and then replace the file using a USB drive or other external storage devices.
  • x86: This PC > C:WindowsSystem32
  • x64: This PC > C:WindowsSysWOW64
• Next, type “cmd” in the Cortana search box and right-click on Command Prompt, and select “Run as administrator” to open it with administrator privileges.
• Now type the “regsvr32 ntdll.dll” command and hit Enter.
• Restart your PC and check if the error is now fixed.

Option 6 – Try scanning your computer using Windows Defender

The ntdll.dll file crash error might also be infected with malware or virus and to eliminate it, you have to scan your computer using security programs like Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.