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A Quick Guide to Fixing Ntdll.dll Error Code

Ntdll.dll Error - What is it?

Ntdll.dll is a type of DLL (Dynamic Link Library) error. DLL errors are some of the most common but complicated errors to troubleshoot and resolve by PC users. The Ntdll.dll error message is displayed in the following formats:

  • "STOP: 0xC0000221 unknown hard error C:WinntSystem32Ntdll.dll
  • "NTDLL.DLL Error!"
  • "STOP: C0000221 unknown hard error SystemRootSystem32ntdll.dll"
  • "[PROGRAM NAME] caused a fault in module NTDLL.DLL at [ANY ADDRESS]"
  • "AppName: [PROGRAM NAME] ModName: ntdll.dll"
  • "Crash caused in ntdll.dll!"
  • "Unhandled exception at [ANY ADDRESS] (NTDLL.DLL)"

You may come across the ‘Ntdll.dll error’ pop-up either when you try to run a program or after using it or while the program is running. It may also appear when Windows starts or shutdowns or even during Windows installation.

Solution

Restoro box imageError Causes

The Ntdll.dll error code can be triggered due to numerous reasons such as:

  • DLL file corruption due to hard drive bad entries
  • Missing DLL files
  • Corrupt hardware drivers
  • Viruses
  • DLL file misconfiguration

It is recommended to resolve this error code immediately on your PC to avoid inconvenience and serious PC damages like program lockouts, system failure, freeze, and crash

Further Information and Manual Repair

All the causes for ‘Ntdll.dll’ are linked with the registry.

The registry is the main database of your system. It saves all the activities and files on your PC including the important data file and unnecessary files such as the junk files, temporary internet files, and obsolete files, files of the programs installed, bad entries, invalid registry keys, and cookies.

These files take up also hard drive space thereby causing dll file damage, disk fragmentation, and data overload. Ntdll.dll error may also occur to due viral infection and malware attack.

There are 2 ways to resolve the Ntdll.dll error. One is to install 2 separate tools, the registry cleaner, and antivirus, and run them separately to scan for errors. This option is time-consuming and running an antivirus can also slow down the speed of your computer.

Therefore we recommend that you opt for the second alternative that is to download Restoro.

Why Restoro.

  • This is an advanced, innovative, and multi-functional PC repair tool embedded with several powerful PC repair utilities like a registry cleaner, an antivirus, and a system optimizer. This is a one-stop solution for all your PC errors.
  • It is user-friendly, safe, efficient, and compatible with all Windows versions. The registry cleaning feature scans for all registry issues.
  • It wipes out all the unnecessary files from the hard drive, repairs the damaged dll files, and restores the registry, thereby resolving the Ntdll.dll error code right away.
  • The privacy error utility functions like an antivirus. It detects and removes all the malicious software like viruses, malware, Trojans, and spyware. Simultaneously, the system optimizer feature boosts the PC speed.

Click here to download Restoro and resolve the Ntdll.dll error on your PC today!

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Option 1 – Try to run the System File Checker

The SFC Scan or System File Checker, us a built-in utility in Microsoft Windows that can be found in the C:\Windows\System32 folder. This tool allows users to scan and restore any corrupted system files in Windows that might be causing the Unknown Hard error to appear. Before you use this tool, make sure to find out whether the sihost.exe on your computer is a Trojan that you have to remove or if it’s a file that belongs to a trusted Windows application. Once you have that sorted out, follow the steps below.
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Option 2 – Try to use System Restore

You can also try using System Restore. This is one of the ways you can use it to back up your PC. Since restore points are created automatically each week by System Restore, you can use System Restore to restore your computer back to an earlier good point in time.

Option 3 – Try to troubleshoot the error in a Clean Boot State

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Contact Support Center

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Option 2 – Try disabling or removing newly installed hardware

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chkdsk /f /r
  • Wait for the process to be completed and then restart your computer.

Option 5 – Try to uninstall programs you’ve installed recently

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Option 6 – Update the Device drivers

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  • Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
  • If you have chosen to uninstall the driver, follow the screen options to complete the process and then restart your PC.
  • Connect the device and Scan for hardware changes – you can see this option under Device Manager > Action.

Option 7 – Perform a System Restore

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  • After that, type in “sysdm.cpl” in the field and tap Enter.
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  • After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.
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Option 1 – Try rebooting your router

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Option 2 – Try checking the status of the Workstation Service

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Option 3 – Try to change the File Sharing Connections setting

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Option 4 – Try checking the Network Configuration

Checking the Network Configuration can also help you fix the error. Refer to the steps below to do so:
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  • Next, restart your PC and check if the problem’s fixed.

Option 6 – Run the Network Adapter Troubleshooter

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Stop C00002lA Fatal System Error- What is it?

C00002lA Fatal System Error is a blue screen of death error that may occur when you start your Windows NT 4.0 based computer. This error causes the screen to turn blue and the system also shuts down. The stop C000021A error message is displayed in the following format:

Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.

Error Causes

The stop C000021A error occurs when either Crsrss.exe or Winlogon.exe fails. When the Windows NT kernel identifies that either of these processes has failed, it stops and the error code stop C000021A appears on the computer screen. Here are some of the underlying causes for the stop C0000021A error:
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  • Hard disk issues
  • Service pack installation has failed
  • Mismatched system files have been installed
  • Bad and invalid registry keys

Further Information and Manual Repair

To resolve the stop C000021A Fatal System Error on your PC try the following solutions:
  • Remove Incompatible Third Party Programs

If the error occurred after you recently installed a new program, then it is advisable to remove that program. The error occurs due to the incompatibility of the program. To remove the program go to the start menu and click on the control panel. Now click on Add/Remove Program tab and double click on the program name that you recently installed and remove it from the list. Once removed, not reboot your PC. Reinstall a compatible program and run it. It is most likely to resolve the issue. However, if the stop C000021A error still occurs, then it means the problem is critical. It is related to the registry.
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  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.
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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.
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Display driver nvlddmkm stopped responding
Users are reporting that randomly their screen will just go black for a second and come back. When this happens, it usually distorts any video currently on the screen; sometimes, they can resume working on the PC normally. However, when they view the event logs, they see the error message Display driver nvlddmkm stopped responding and has successfully recovered. In this article, we will address solutions to this issue and how to not have it again.
  1. Remove Aura iCUE plugin (applies to only ASUS motherboards)

    Some PC users discovered that iCue adds an Aura plugin for ASUS MOBOs. That, combined with EVGA Precision X1, was causing the error it seems – this was determined when the screen would turn off and on when opening EVGA x1 software. In this case, the issue was resolved by removing the Aura iCUE plugins.
  2. Change Power Management mode

    Right-click the battery icon on the notification area on the right of the Taskbar. Select Power Options. In the Power Options window, locate your current Power Plan. Select High performance, if that’s not your current power plan. Now, click on Change plan settings next to it. Now click on Change advanced power settings. Expand PCI Express section. Expand Link State Power Management. Now set power saving to Off for both On battery and Plugged in state. This would fix any issues caused by the low power of the video card. Click Apply > OK to save changes.
  3. Update graphics driver

    Go into device manager Expand display adapter section Right-click on adapter Click on update driver Reboot
  4. Rollback graphics driver

    Go into device manager Expand display adapter section Right-click on adapter Click on Roll back driver Reboot
  5. Uninstall and reinstall graphics card driver

    Go into device manager Expand display adapter section Right-click on adapter Click on Uninstall device Reboot
  6. Replace the graphics card

    If everything else failed, replace the graphic card
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Windows PC advantages over Apple Mac

In the last article, we have covered various advantages of Apple hardware over Windows PC, however, PC has their own strengths and advantages over MACs as well. Join us as we explore why would you choose Windows PC over MAC.

Windows PC

Hardware customization

If you like to customize and build your own hardware and customize your existing computer then MACs are out of the picture, on other hand, computers based on Windows operating system are much more flexible in terms of customization.

While Apple hardware is locked and only allows small changes to it, computers running on Windows are free and open to various upgrades and modifications so if you like to play with hardware Windows is your platform.

Gaming

There are games on MAC true but their numbers can not compare to games available for the Windows platform. On top of that, most latest and best gaming hardware is not even available on Apple platforms so if you plan to game in high resolutions and play the latest games there really is no option other than Windows.

Windows Platforms also has multiple emulators that you can use to play games from other older platforms and Microsoft since it owns Xbox has some great plans for both PC and Xbox gaming.

Software back compatibility

Since the introduction of the new MAC OS X, apple really lost a lot of application back compatibility, and a lot of old legacy software can not be run on modern Apple computers. Windows on the other hand have always tried and succeeded in keeping maximum compatibility with older and legacy software.

Also on the Windows platform, there is a lot of community support for old and legacy software so even if it is not officially supported it is backed up by the community.

Software variability

In terms of where can you find the most different software, you need to look no further than the Windows platform. How Windows itself has great backward compatibility and a lot of developers are using it to create new software thanks to Visual Studio and .NET Windows has cemented itself as a platform with the most available software.

The popularity of Windows as the home operating system and as a gaming platform has made it quite interesting in eyes of various developers and tons of small applications are made daily for it. Windows 11 has also brought native android support to it and that has just expanded its already impressive catalog of applications.

Freedom of choice

Overall Windows PC is most appealing for users that like to be able to choose everything, from hardware components to software they would like to use. No other platform will give you larger freedom of choice and better personalization options.

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