Fix DLL errors 126 and 127 on Windows 10/11

by Andrew Wafer
Andrew Wafer
Andrew Wafer
Andrew is not just trying to bring you closer to Windows, but he's truly interested in this platform. He just happens to be passionate about sharing that knowledge... read more
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  • Error 126 and 127 can be caused by a missing file, a corrupted registry, outdated drivers, or even a system failure.
  • An initial step would be to check the program that is producing the error in the first place.
  • The DLL error 126 can also be caused by an issue with your antivirus, so try checking that as well.
  • This problem can also be associated with the loadlibrary failed with error 126 message.
How to fix DLL errors 126 and 127 on Windows 10

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The DLL error 126/127, like any other similar DLL errors, describes a critical issue that prevents certain processes from running properly.

Shortly, it can be caused by a missing file, a corrupted registry entry, an outdated driver, or even a system failure.

Well, for finding the right troubleshooting solutions, we structured this tutorial in dedicated sections where you can find details on how to fix DLL errors 126 and 127 on Windows 10.

As already outlined, this is not necessarily a system problem. So, before choosing to perform other drastic measures (such as using a Windows restore point), you should first try to isolate the issue.

In this way, you can fix the DLL errors 126 and 127 easily and quickly, by using one of the methods explained below.

It’s worth mentioning that this problem can also be associated with the loadlibrary error 126 in Windows 10.

How can I fix DLL errors 126/127 on Windows 10?

  1. Temporarily disable your antivirus protection
  2. Update Microsoft NET Framework
  3. Run the DirectX End-User Runtime Web Installer toolkit
  4. Uninstall and reinstall your program
  5. Initiate a system check
  6. Update the firmware drivers

1. Temporarily disable the antivirus protection

  1. Disable the antivirus protection for a few minutes.
  2. Uninstall the program which is not running and which is showing the Dll error 126/127 problem.
  3. Then, reinstall this program from the beginning.
  4. With the antivirus disabled, run the program as now it should run properly.
  5. If it does, add an exclusion rule within your security software for better protecting the files associated with this app.

Your antivirus program can delete or quarantine certain files, patches, or Dlls associated with programs, games, or even apps.

The reason why this is happening is that the antivirus scanning engines might misinterpret files that can be trusted with potential harmful packages.

Use a third-party DLL fixer

So, in this case, you should try to verify the quarantine list as there you might find the file that’s missing from this certain program, app, or game.

If the above-mentioned solution does not fix your problem, then we recommend a 3rd party software that can easily fix those DLL errors.

Restoro is our top recommendation because it uses its own foolproof database of Windows system files to verify and replace any problematic files such as corrupt DLLs.

Get Restoro

2. Update Microsoft NET Framework

If Microsoft NET Framework is outdated, you might experience these two DLL errors. So, you should also try to update this built-in software as it might help you fix the problem.

In order to do so, access Microsoft’s dedicated webpage from here and download the latest version of Net Framework.

Expert tip:


Some PC issues are hard to tackle, especially when it comes to corrupted repositories or missing Windows files. If you are having troubles fixing an error, your system may be partially broken.
We recommend installing Restoro, a tool that will scan your machine and identify what the fault is.
Click here to download and start repairing.

If the .NET Framework 3.5 is missing from Windows 10 here’s an expert guide that will help you fix the problem.

3. Run the DirectX End-User Runtime Web Installer toolkit

Reinstalling DirectX can also address DLL problems. This is also a program developed and offered by Microsoft. To reinstall it on your computer, go to Microsoft’s official webpage.

Use the search engine, enter DirectX and just download the DirectX End-User Runtime Web Installer.

Save it on desktop, run the executable file and follow on-screen prompts for resuming the flashing process. Reboot your Windows 10 system at the end.

4. Uninstall or reinstall the program

  1. Click on the Windows search icon (next to the Windows Start button) and type Control Panel.
  2. Then, click on the first result that’s displayed.
  3. In Control Panel, switch to Category tab.
  4. Then, choose Uninstall a program under Programs.
  5. Find the program that you want to remove, select it and then pick uninstall.
  6. That should be all.

Sometimes, while a certain program is installed on your computer something is happening and the installation process gets corrupted.

In most situations, you are not prompted with errors, so you might think that your program was properly configured. But, in fact there might be corrupted files that can cause the DLL errors 126 and 127 events.

Well, there is an easy fix for this issue as all you need to do is to repair the program involved.

You can do that by running the uninstall sequence – if the repair option is available, choose it. Otherwise, complete the removal process and then reinstall the app from the beginning.

You can remove a program from your Windows 10 system easily by using the file’s own uninstaller or by going to Control Panel as shown above.

However, there’s a third option, to use specialized software to uninstall stubborn programs. One of the best ones, that is easy to use and you may be familiarized with is CCleaner.

This software is light and simple and it will wipe any trace of the program you’re uninstalling, even from the registry. Use the uninstaller feature, then clean up your registry and leftover files with the respective features.

Get CCleaner

5. Initiate a system check

  1. Type cmd in Windows search and click the Run as administrator option under Command Prompt.
  2. Type in the following command and press Enter: sfc/scannow
  3. A scan will be automatically initiated and completed.
  4. If errors are found, the Windows system will try to fix them.

If system corrupted files are causing the DLL error 126/127 event, then you should run a Windows troubleshooter engine to automatically fix the problem.

6. Update the firmware drivers

  1. Right-click on the Windows Start icon.
  2. From the list that’s displayed choose Device Manager.
  3. In Device Manager, find the Firmware field and extend it.
  4. Next, right-click on System Firmware and choose Update driver.
  5. Wait while the update operation is completed and restart your computer when done.

The troubleshooting methods listed above should help you address the DLL errors 126 and 127. If you used other solutions that might work for this problem, share them with our readers.

We will then update this tutorial accordingly. Enjoy and stay close for further tips, tricks, and tutorials for the Windows 10 system.

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