Fix DLL errors 126 and 127 on Windows 10

Andrew Wafer
by Andrew Wafer
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Fix dll error 126 127
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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 Shortly, it can be caused by a missing file, a corrupted registry entry, an outdated driver or even a system failure.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 running any Microsoft troubleshooters or 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.

How to fix DLL errors 126/127 on Windows 10

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

1. Temporarily disable the antivirus protection

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 because the antivirus scanning engines might misinterpret files that can be trust with potential harmful packages.

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. You can then restore it, or if that isn’t working you should follow instead:

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

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

Run a third-party DLL fixer

There are plenty of third-party programs out there that promise to fix or replace missing or broken DLLs, and most of them stay true to their word. However, if you are to choose just one, then there’s no way you can go wrong with Restoro.

How to use Restoro to fix missing or broken DLLs

  1. Download here Restoro and install it on your Windows 10 PC
  2. Let Restoro perform a full system scan
  3. When the scan is finished, press Clean Now
    • This is when you will have to activate your license key
    • Before the repair process starts, Restoro will create a restore point of your system in case things go wrong
  4. Restoro will now proceed to fix your DLL-related issue.

Note: While Restoro can be downloaded for free, it has limited functionality until you activate it. That being the case, if you want the full benefit of a great PC repair and optimization tool, you should purchase the full license.

2. Uninstall or reinstall the program

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 event. 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:

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

3. 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.

4. 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 (or access this link). 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.

5. Initiate a system check

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. Here is what you need to follow:

  1. On your computer open an elevated command prompt window: right click on the Windows Start icon and from the list that’s displayed choose ‘Command Prompt (Admin)’.run command prompt
  2. In this cmd window type ‘sfc /scannow’ and press Enter.
  3. A scan will be automatically initiated and completed.
  4. If errors are found, the Windows system will try to fix them.

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.

Final thoughts

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.