How to Manually Fix 0x8004210A Error Code on Your System

Code 21 - What is it?

Code 21 is a Device Manager error code that appears when you try to use a hardware device attached to your computer and the Windows prohibits you from using it.

This is due to the Windows experiences problems loading the device driver. This error message is displayed in the following format:

“Windows is removing this device. (Code 21)”

Solution

Error Causes

Error code 21 means that Windows is in the device removal process and the device has not been completely removed. It occurs when you set a device to be removed and then select the same device to run on your system.

Upon your instructions, Windows start to remove that device and when you on the other hand try to use/access the same device that you selected for removal, it kicks up Code 21.

Further Information and Manual Repair

If you are experiencing error code 21 on your PC, it is advisable to resolve it immediately.

Though this error will not damage your system, but will significantly lower the performance of your PC which is definitely something you don’t want especially if you work on your computer daily and use it to perform important time-sensitive errands.

To repair and resolve, try the methods given below:

Method 1 - Wait for a Few Seconds and Then Press F5

This is one of the best and easiest ways to resolve code 15 on your system. Wait for a few seconds, and then press the F5 key. This will update the Device Manager view and the error will most probably go away.

Method 2 - Restart Your PC

Sometimes error codes may pop up due to temporary glitches. To resolve such errors, a simple reboot of your PC is enough. Shut down Windows and then restart your system.

This is most likely to resolve Code 21. However, if the error still persists then this means the underlying problem for code 21 is deeper than you think. Try method 3 to resolve.

Method 3 - Install DriverFIX

As mentioned earlier, the error code 21 may occur if you have selected a device to remove and then you try to reuse it.

To resolve, you may have to install the device again and the driver for that the reinstalled device. To reinstall the driver without any hassle, simply download DriverFIX.

It is a smart, user-friendly, and intuitive software program designed to resolve driver problems. The program is embedded with intelligent device identification technology which:

• Automatically detects all the appropriate system drivers
• Matches them with the latest available versions
• And then updates drivers according to their compatible versions on a regular basis

Furthermore, it enables accurate installation and ensures that your system is running at its optimal speed.

Other features that this program boasts are full backup and restoration, safe USB management, and ejection.

If nothing works, you can try the full backup and restoration feature and restore your PC to its previous state when it was functioning properly before the error occurred.

DriverFIX creates a backup of all your files and data hedging keeps you from disasters like data loss. It restores the system to the time when it was working properly.

Click here to download DriverFIX on your system and resolve error code 21 today.

AI and neural networks are more and more being used in all parts of our lives. From face detections to deep fakes it is both amusing and frightening to watch at the same time. From some really bad uses of neural networks and AI overall, looking at you deep fakes, upscaling videos or images are mostly harmless pieces of work not harming anyone. There is one cool YouTube channel, well there are more but this one seems to have most of the videos on it and if I am wrong I apologize. https://www.youtube.com/channel/UC33rC3GO1UZFAkMcCCwjyWg So upscale is like previously mentioned a YouTube channel that hosts old game trailers and into videos but in full 4K or 8K video resolution, fully upscaled using neural networks. There are some videos that are not maybe top-notch but the large quantity of them is pretty well upscaled and they do indeed look great. So if you have some time and want that old nostalgia fix, go and check it out. You might find something that will bring that old you out and you might even drop a smile or two remembering old good days, I know I have.

A lot of users have experienced various issues either in installing a Feature or a Windows Update. One of these errors is the one with the error code 0x80d02002. If you are one of the users who is facing this problem right now, then the working solutions given in this post will surely help. The Windows Update error code 0x80d02002 indicates that Windows 10 fails to upgrade or install as there is some issue with the files that have been downloaded and Windows encounters an error in installing them. Thus, the best thing you can do in such a case is to start the installation from scratch but before you do that, here are some suggestions that might help.

Option 1 – Try to rename the SoftwareDistribution folder

The Software Distribution folder in the Windows operating system is a folder that can be found in the Windows directory and is used to store files temporarily which might be required to install the Windows Update on your PC. Thus, it is required by the Windows Update and maintained by WUAgent. Aside from that, it also contains all the Windows Update History files and once you delete them, you will most likely lose the Update history. As a result, the next time you run the Windows Update, it may result in a longer detection time.

• Open the WinX Menu.
• From there, open Command Prompt as admin.
• Then type in the following command – don’t forget to hit Enter right after typing each one of them.

net stop wuauserv net stop bits rename c:windowsSoftwareDistribution SoftwareDistribution.bak

• After entering these commands, it will stop the Windows Update Service, the Background Intelligent Transfer Service, and rename the SoftwareDistribution folder.
• Next, got to the C:\Windows\SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.
• Once all the contents in the Software Distribution folder are deleted, restart your PC and then go back to Command Prompt and input the following commands again.

net start wuauserv net start bits

Since the folder has already been flushed, it will be populated afresh the instant your restart your computer and open Windows Update.

Option 2 – Try to reset the Catroot2 folder

You can also try resetting the catroort2 folder as it is known to fix tons of Windows Update issues including the Windows Update error code 0x80d02002. Both the Catroot and catroot2 are Windows operating system folders that are required for the Windows update process.  So when you run the Windows Update, the catroort2 folders stores the signatures of the Windows Update package and helps it in the installation. It makes use of the “%windir%System32catroot2edb.log” file in the updating process. Afterward, the updates are stored in the SoftwareDistribution folder which is used then by the Automatic Updates in order to execute the updating process. Keep in mind that you must not rename or delete the Catroot folder. Although the Catroot2 folder is recreated automatically by Windows, the Catroot folder isn’t.

Option 3 – Try running the DISM tool to fix the broken Windows Update client

The Windows update/upgrade error 0x80d02002 might be caused by some issues in the Windows Update client so you need to run the DISM tool to repair it. Note that you have to use another computer or another Windows from a shared network to fix it.

Option 4 – Try to run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the Windows Update error 0x80d02002. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button.

Option 5 – Try to run Microsoft’s troubleshooter online

You also have the option to run Microsoft’s online troubleshooter which could help you fix Windows Update errors.

There are times when you install a Windows update to your Windows 10 computer but you only got an error message saying, “The update isn’t applicable to your computer”. This is unusual as Windows was the one that downloaded them in the first place. To understand the reason behind this error, read on as this post will also give you a couple of suggestions you can try to fix the problem. One of the main reasons why this error occurs is that your computer might not have the required installed updates and many more. Other reasons include:

1. The update might be replaced. There are instances when a newer Windows version is already available on the computer and that the version you are trying to manually install is an older version which is why the Windows update failed.
2. The update might already be installed. There are times when the update process is still in progress and the earlier payload might have already been installed.
3. It could also be that it’s a wrong update for architecture. As you know, updates are designed accordingly based on the architecture of the computer so if the update you are trying to install does not match the architecture of your CPU then it’s no wonder you’re getting an error message.
4. Your computer might be missing a prerequisite update. There are Windows updates that depend on other updates so if you missed one and you’re installing another one, it could be the reason why you’re getting the error.

To fix the problem, here are some suggestions that might help.

Option 1 – Try verifying the package and the Processor Architecture

As pointed out earlier, updates are made according to the Windows versions. Thus, if one of the updates failed to install, you need to check if it’s applicable or not. The best way to do that is by searching the Windows update name on the official website of Windows. It could be that the Processor Architecture is not compatible with the Windows Update you are trying to install. If you have an X86-based processor, you can’t install x64-based installations of Windows and vice-versa. This usually happens when you’ve downloaded the update manually and then tried installing it.

Option 2 – Try checking if the update is old

The issue might be because you are trying to install an old Windows update which is why it didn’t work. To check, go to Settings > Update and Security > View Update history. From there, you can look for the update.

Option 3 – Try checking if the update is already installed

To verify the update, just go to the Windows Update history once more as you did in option 2, and then see if the update is already installed or not.

Option 4 – Try checking the prerequisites

AS mentioned earlier, there are some updates that depend on other updates before they get installed on your computer. The best way to verify is by checking the Microsoft Knowledge Base (KB). And to verify if the prerequisite updates are installed or not, just run the command below in PowerShell:

get-hotfix KB1111111, KB2222222, KB3333333

Note: In the command given above, you need to replace “KB1111111, KB2222222, KB3333333” with the actual update KB numbers.

Option 5 – Try running the Windows Update Troubleshooter

As you know, Windows 10 has various auto-repair built-in tools to help users fix small issues which used to get fixed manually. And in this case, you will need the Windows Update Troubleshooter to fix the issue.

• Go to Settings and click on Update and Security.
• From there, click Troubleshoot and click on Windows Update and then click the “Run the troubleshooter” option.
• After that, it will try to detect and automatically fix common issues in the Windows Updates which can be resolved by Windows itself. Note that the process may take several minutes before it completes so you need to wait until it’s done. Once it’s done, in case you have some pending update that wasn’t realized by the system early on, it will apply the fix right away and restart the Windows Update service.

Error Code 0x80d02002? - What Is It?

Error Code 0x80d02002 is one of the common errors encountered by Windows users upgrading to Windows 10 or installing new Windows updates. This error results in program lock-ups, system crashes, and freezes, or slow PC performance. It can also cause possible loss of private data on your device.

Some of the common error messages involving Error Code 0x80d02002 include:

• Something went wrong, Please try again later. Windows update error dt_000 – 0x80d02002
• Error(s) found: Code 0x80d02002 Windows update encountered an unknown error. Windows update ran into a problem.
• Windows Update Cannot Check For Updates – 0x80d02002
• 0x80d02002 – Windows could not search for new updates. An error occurred while checking for new updates for your computer. Some updates were not installed.
• There were some problems installing updates, but we’ll try again later If you keep seeing this and want to search the web or contact support for information, this may help – 0x80d02002

While upgrading to Windows 10, depending on the state of your computer, you might encounter other error messages, including error code 0xc000021a. 

Solution

Error Causes

Error Code 0x80d02002 normally occurs when a user updates their system, upgrades to Windows 10 from Windows 7 or Windows 8/8.1, or installs new Windows updates. There are several reasons why this error happens which includes:

• Internet connection problems
• Blocked system ports
• Conflict on system level

Further Information and Manual Repair

In trying to fix Error Code 0x80d02002, you can employ manual repair methods to effectively and efficiently solve the issue. However, keep in mind that one tiny error made in using the command prompt can result in data loss or put your computer in a no-boot situation. In such cases, you can seek help from a Windows professional or consider using an automated tool whenever necessary.

You can try doing the following manual repair methods in an attempt to fix Error Code 0x80d02002:

Method One: Reset Windows Update Components

In trying to fix Error Code 0x80d02002, you may try resetting manually and check the Windows update components by doing the following steps:

1. Right-click on the Start button then select Command Prompt (Admin) from the list to open a Command Prompt window.
2. Once the Command Prompt window appears, type or copy and paste the following commands all at once then hit Enter:

net stop wuauserv net stop cryptSvc net stop bits net stop msiserver ren C:WindowsSoftwareDistribution SoftwareDistribution.old ren C:WindowsSystem32catroot2 catroot2.old net start wuauserv net start cryptSvc net start bits net start msiserver pause

3. Exit the Command Prompt then check if the issue is resolved.

Method Two: Check If The Region Is Correct

1. On the Start screen, type Region. Afterward, click on Settings then hit
2. Under the Format tab, choose English (United Kingdom).
3. Select Language Preferences then click on Add a language. Afterward, add “your language.”
4. After you’ve added your preferred language, choose it then click on Move Up to make it the first language. Close now the Language window.
5. On the Region window, select Additional Settings and see if the values are the same.
6. Select the Location tab then change the Home Location to “your country,” then hit

Method Three: Perform an SFC Scan

Check if there are system files that need to be repaired by running an SFC Scan. Follow the steps below:

1. Type CMD in the search bar then right-clicks on it. Select Run as Administrator. This will open a Command Prompt window in elevated mode.
2. In the next window, select
3. Once the Command Prompt window appears, type the command: sfc /scannow
4. Leave the Command Prompt window open and wait for the process to complete. This might take a while depending on how fast or slow your device is.
5. When everything’s fine, the message saying “Windows Resource Protection did not find any integrity violations” will appear.

 Method Four: Disable Skype or Antivirus

There are times when Skype or your installed antivirus can conflict in updating your system. You can disable first your antivirus or Skype as you update your system and enable them once again when you successfully update your system.

Method Five: Download A Powerful Automated Tool 

Can’t seem to put up with the long and technical manual repair process? You can still fix this error by downloading and installing a powerful automated tool that will surely get the job done in a jiffy!

This post will help you fix the ERR_CONNECTION_RESET error in Google Chrome. This error indicates that the Chrome browser wasn’t able to establish a stable connection or that there really is no connection at all with the website you are trying to open. This error does not occur on all websites though. When you encounter this kind of error message you will see the following message on your Google Chrome browser:

“This website is not available, The connection to example.com was interrupted, Error 101 (net:: ERR_CONNECTION_RESET): The Connection was reset.”

Note: You need to follow the options given below to fix the ERR_CONNECTION_RESET error and make sure to reload the webpage each time you complete following each one of the fixes.

Option 1 – Check the Network Cables and restart the router then reconnect

Of course, the first thing you can try is to check if the network cables connected to your computer or router are properly connected. And if your computer is connected via Wi-Fi, you need to make sure to restart your router once. In addition, you can also forget the Wi-Fi your computer is currently connected to and then try reconnecting again to see if it would work.

Option 2 – Try removing the Proxy

Removing the Proxy might also help you in fixing the ERR_CONNECTION_RESET error in Chrome. Here’s how you can do it:

• 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 3 – Try to increase the Maximum Transmission Unit (MTU)

You can also try increasing the Maximum Transmission Unit to fix the error. To do so, follow these steps:

• Open Settings and go to Network & Internet > Ethernet.
• From there, take off the Active Wireless / Wired Network Connection.
• Next, open Command Prompt as admin.
• Then type the “netsh interface IPv4 set subinterface “Ethernet 4” mtu=1472 store=persistent” command and hit Enter to execute it.

Option 4 – Flush the DNS and reset TCP/IP

Flushing the DNS and reset TCP/IP could also help in fixing the ERR_CONNECTION_RESET error in Chrome. To do so, refer to these steps:

• Click the Start button and type in “command prompt” in the field.
• From the search results that appear, right-click on Command Prompt and select the “Run as administrator” option.
• After opening Command Prompt, you have to type each one of the commands listed below. Just make sure that after you type each command, you hit Enter
  • ipconfig /release
  • ipconfig /all
  • ipconfig /flushdns
  • ipconfig /renew
  • netsh int ip set dns
  • netsh winsock reset

After you key in the commands listed above, the DNS cache will be flushed and the Winsock, as well as the TCP/IP, will reset.

Option 5 – Disable the AppEx Networks Accelerator feature

The AppEx Networks Accelerator is known to slow down network connections. Some users reported that it slows down the network speed by 70% up to 80% which is why you need to disable it. Here’s how you can do it:

• Go to Settings and select Network & Internet and from there select Ethernet > Change adapter options.
• Next, right-click on the network connection and select Properties.
• Then look for AppEx Networks Accelerator and uncheck its checkbox.
• Now click the OK button to save the changes and then check if the error is now fixed.

Option 6 – Delete the WLAN Profiles

Deleting the WLAN Profiles might be a good idea if you are not able to connect to the internet on your computer and if you’re using Wi-Fi. It could be that the networks that were connected previously have gone rogue which is why it is not connecting properly. And so deleting the WLAN profiles might help you in fixing the ERR_CONNECTION_RESET error.

Option 7 – Reinstall the Network Adapter Drivers

• Tap the Win + R keys to launch the Run window and then type in the “devmgmt.msc” command and hit Enter to open the Device Manager window.
• Under the Device Manager, you will see a list of drivers. From there, look for the Network Adapters and expand it.
• Then right-click on each one of the Network drivers and select “Uninstall device”.
• Restart your PC.

Option 8 – Try to disable the Wi-Fi Miniport

• In the Cortana Search box, type “command prompt” then right-click on the search result and select “Run as administrator”.
• After opening Command Prompt with admin privileges, type the commands listed below and hit Enter right after you key in each one of them.
  • netsh wlan stop hostednetwork
  • netsh wlan set hostednetwork mode=disallow
• Now exit Command Prompt and tap the Win + R keys to open the Run dialog box.
• Type “cpl” in the field and hit Enter to open Network Connections.
• From there, look for Microsoft Virtual Wi-Fi Miniport and right-click on it, and then select Disable.

Option 9 – Start Chrome in Safe Mode

The same with Windows Safe Mode, starting Chrome in Sage mode will open the browser but without all the user settings and extensions. And then try opening the website you were trying to open earlier.

Option 10 – Reset Google Chrome

• Open Google Chrome, then tap the Alt + F keys.
• After that, click on Settings.
• Next, scroll down until you see the Advanced option, once you see it, click on it.
• After clicking the Advanced option, go to the “Restore and clean up the option and click on the “Restore settings to their original defaults” option to reset Google Chrome.
• Now restart Google Chrome.

DirectX function GetDeviceRemovedReason error is a DirectX error that comes up during playing games on Windows 11 operating system. Usually, the error occurs in gaming systems powered by AMD and very rarely if any times at all on Nvidia or intel platforms. If you are one of the gamers affected by this error, fear not because we have a solution for you. Follow provided fix guide in order to correct this error and get back to gaming asap.

1. Update drivers

The first thing of course is to update your graphic card driver, you can do this with your graphic cards panel software or directly in Windows itself but the best practice and one that I would recommend is to go to your graphic card manufacturer’s website and download the latest driver there, and then install it inside Windows 11.

2. Change power mode

Changing power mode inside Windows 11 can solve this issue since sometimes Windows power manager if it is set to anything except best performance can interfere with the proper functioning of the graphic adapter, and because of this error. To change the power setting do the following:

1. Press ⊞ WINDOWS + I to open settings
2. Click on the System tab
3. Select power & battery on the right part
4. Click on the menu beside power mode
5. Select the best performance

3. Run SFC scan

Corrupted system files can also cause this error and if previous steps have not resolved it we will use Windows built-in tool SFC scan to find and repair all bad files in windows.

1. Press ⊞ WINDOWS + S to open the search menu
2. Type in Windows terminal and run it as administrator
3. If prompted click on YES on UAC
4. Press CTRL + SHIFT + 2 to run command prompt
5. Type in sfc /scannow and press ENTER
6. Wait for the whole process to finish and then reboot your system

4. Reinstall the problematic game

Sometimes game files can get corrupt and maybe even overwritten, try with game reinstallation if the problem still persists.

Error 2738 - What is it?

Error 2738 is associated with the VBScript engine. VBScript is the abbreviation for Visual Basic Scripting. It is an Active Scripting programming language developed by Microsoft and modeled on Visual Basic. It is used with a fast interpreter in a large variety of Microsoft environments. Error 2738 indicates that the VBScript engine is not registered properly on your PC. It occurs when you try to install or uninstall VBScript-supported applications on your system. The error message is displayed in the following format:

"Error 2738. Could not access VBScript run time for custom action."

Solution

Error Causes

There are several reasons for the error 2738 message pop up. These include: Incorrect or corrupt registry entries on your system. These entries interfere with VBScript support in Windows thereby generating such error codes.

• Removal of McAfee Antivirus
• Windows registry values are not updated accurately during the uninstallation of McAfee Software
• The Visual Basic Script is registered in the registry under the local user instead of the local machine

No matter what the cause of the error may be, it is recommended that you resolve the issue immediately without any delay.

Further Information and Manual Repair

Here are some of the easy and proven DIY methods to repair error 2738 on your PC:

Method 1

If the error 2738 occurs because the VBScript is not registered correctly, then follow these steps to resolve.

1. Go to the start menu, open Run, and type RegEdit in the box and then press OK. This will open the Windows Registry Editor.
2. Now type KEY_LOCAL_MACHINESOFTWAREClassesCLSID{B54F3741-5B07-11cf-A4B0-00AA004A55E8}InprocServer32, if the key does not have a data value of C:\Windows\System32\vbscript.dll then simply add it.
3. Now go to the All programs option and then Accessories.
4. Here right-click on Command Prompt and then ‘Run as Administrator’.
5. Now type egsvr32 vbscript.dll then press enter. After that type regsvr32 jscript.dll and then press enter.
6. Restart your PC to activate changes.

Method 2

Sometimes error 2738 may occur when you uninstall preinstalled MacAfee antivirus software on your system. Un-installation usually leaves some trace components in the registry. These components must be removed completely otherwise error codes like 2738 may keep occurring on your computer screen. In such an event, the best way to resolve it is to download the McAfee Consumer Product Removal utility from McAfee's official website. Save this file on your desktop. Double click the file and follow the steps to remove this software completely and successfully from your PC. Proper removal of the McAfee program will resolve error 2738 right away. But if the error still persists then try other methods illustrated below.

Method 3

Download Restoro to remove incorrect and corrupt registry entries on your system that may be interfering with VBScript support. Restoro is a new and easy-to-use PC Repair Tool deployed with an intuitive interface and a powerful registry cleaner. The registry cleaner removes all entries corrupting the registry, cleans it, and resumes it to its normal state. Click here to download Restoro.

Driver Verifier is a built-in tool in Windows 10 that monitors device drivers on your computer, if it detects issues with drivers, it will attempt to fix the issue. If you are encountering Blue Screen for a Driver and after running Driver Verifier you get another with message DRIVER_VERIFIER_DETECTED_VIOLATION ten follow this article step by step in order to solve it. There is a chance that you will maybe even have to do this in safe mode, if that is your case, login into safe mode and proceed, otherwise proceed normally.

1. Update Device Drivers

   the most common issue with the blue screen is old Drivers, in most cases, graphical drivers, update all Drivers with the latest versions and see if this will resolve the issue.

2. Stop or uninstall Virtualization software

   Virtua machine software is a great way to have a safe environment and to experiment while preserving your Windows installation intact, however sometimes due to the nature of these applications they can be a case for blue screen errors. Stop virtualization software to see if it will remove the issue. If that is the case, try another virtualization application

3. Disable Driver Verifier

   Press ⊞ WINDOWS + X to open the secret menu Click on Command Prompt (admin) Inside command prompt type: verifier and press ENTER Select the Delete existing settings radio button Click Finish Reboot your computer

4. Reset Driver Verifier

   Press ⊞ WINDOWS + X to open the secret menu Click on Command Prompt (admin) Inside command prompt type: verifier /reset and press ENTER Reboot your computer

5. Use system restore

   Rollback Windows to the previous state where everything was working fine.

DLL files have certain functions that help the programs in the computer run properly. One of these DLL files is the Msvcr120.dll_clr0400.dll. This particular DLL file is responsible for the extraction of the required resources during the installation of a program and is used when the program is launched or when games are launched in the C++ language. However, a number of users recently reported that they’ve encountered an error that says, “Msvcr120.dll_clr0400.dll is missing” when they tried to install an application or when they tried opening an application. This kind of error could be due to several factors. It is possible that the DLL file is corrupted or there are some programs that interfere with the DLL file. On the other hand, it is also possible that it has been infected by a virus. To resolve this error, here are some potential fixes you need to check out:

Option 1 – Run System File Checker scan

The first thing you can do to fix the error is to try running the System File Checker or SFC scan. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:

• Hit the Win + R keys to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Reboot your computer.

Option 2 – Troubleshoot the missing Msvcr120.dll_clr0400.dll error in a Clean Boot State

You can also troubleshoot the isDone.dll error in a Clean Boot state. It could be that there are some third-party applications in your computer that are preventing the application from getting installed and to isolate this possibility, you need to boot your computer in a Clean Boot State and then try installing the program again. Putting your computer in this state can help you identify which program is the culprit and thus isolates the problem. In a Clean Boot state, your computer will start using only the pre-selected minimal set of drivers and startup programs. Note that you have to disable and enable one process at a time.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• After you’ve set your computer into a Clean Boot State, make sure that you’re signed in as administrator and then try to install the application again.

Option 3 – Try to re-register the problematic DLL file

You can also try to re-register the DLL to resolve the problem. The Regsvr32 tool is a command-line utility that can be used to register and unregister OLE controls like DLL and ActiveX (OCX) controls 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 /[DLL file]
  • exe [DLL file]

Note: Replace “[DLL file]” with the name of the DLL file that was pointed out in the error.

• After you execute the given commands, 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 4 – 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 5 – Scan your computer using Windows Defender

The DLL file might also be infected with malware or virus and to eliminate it which could explain why you’re getting the “Msvcr120.dll_clr0400.dll is missing” error. Thus, 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.