How To

How to fix DLL files missing from your Windows 10 PC


2. Run SFC Scanner

  1. Right-click on the Start Menu button, and choose Command Prompt (Admin).
    Sysmenu dll file missing cmd admin
  2. Enter the following command and press Enter:
  • sfc/scannow
    Msvcr100.dll file missing error sfc/scannow cmd
  1. Wait for the process to finish (it may take a while because it will scan your whole system for errors).
  2. Restart your computer.
  3. Check if your DLL is still missing.

SFC Scanner is Windows’ own tool for solving various system-related problems.

This tool can also be used to detect crucial missing DLL files on your computer, so that’s what we’re going to try first, in order to solve the missing DLL problem.

If SFC Scanner found the missing DLL file, you’re good to go, but in case this tool wasn’t helpful, try some of the solutions listed below.

If you’re having trouble accessing Command Prompt as an admin, then you better take a closer look at this guide.


scannow command has stopped before it finished? We’ve got an easy fix for you.


3. Run DISM

  1. Run Administrative Command Prompt (as shown above).
  2. Enter the following command into the Command Prompt, and press Enter: DISM /Online /Cleanup-Image /RestoreHealth
    T8extpex.dll file is missing DISM cmd
  1. Wait for the process to finish.
  2. Restart your computer.

This solution is similar to the first one, because DISM (Deployment Image & Servicing Management) tool is used when SFC Scanner fails to repair system files, in our case find the necessary DLL file.

If SFC Scanner didn’t solve the problem, DISM should. But even if this tool proves to be useless for your DLL problem, you’ll have to fix it manually.


DISM fails on Windows 10? Check out this quick guide and get rid of the worries.


4. Download a DLL file manually

So, if there’s no other way to solve the problem with a missing DLL, you can download it manually from the internet. But be aware that there are a lot of sites online offering free DLL files, but just a few of them are trustworthy.

I also have to mention that if you can run a third-party program or a game due to a missing DLL file, try to reinstall that program, and you’ll maybe reinstall the DLL file, as well.

If you don’t feel comfortable downloading missing dll files online, you can try to copy them from another working PC.


5. Install DirectX

If DLL files are missing from your PC, you might be able to fix the problem simply by installing DirectX. According to users, they are usually getting the error message about missing files when trying to start a certain video game.

To fix the problem, you just need to install the required version of DirectX and the issue should be resolved. You can download the necessary files from Microsoft’s website, but sometimes there’s a DirectX setup file on your game’s disc so you can install it from there.

If you’re getting error messages while trying to run certain games, you should be able to fix the problem by installing the necessary DirectX. If you want to find out more about the latest release of DirectX, check out this updated article.


Can’t install DirectX on your Windows 10 PC? Don’t worry, we’ve got the right solution for you!


6. Reinstall Visual C++ Redistributables

According to users, If DLL files are missing from your PC, you might be able to fix the problem simply by reinstalling Visual C++ Redistributables.

Many applications require these files in order to work, therefore you need to download them from Microsoft’s website. After installing the necessary Redistributables the issue should be resolved.

Keep in mind that certain applications require an older version of Redistributables in order to work, so you’ll might have to download and install the later versions as well.

Few users reported that they fixed this problem simply by reinstalling the previously installed version of Redistributables. After doing that, the issue was resolved completely.


7. Disable or remove your antivirus

According to users, sometimes your antivirus software can interfere with Visual C++ Redistributables and prevent you from installing the necessary DLL files.

To fix the issue, you need to disable your antivirus and check if that solves the problem. If disabling the antivirus doesn’t help, you might have to uninstall it.

The best way to do that is to download a dedicated removal tool and use it to remove all files associated with your antivirus.

If you’re a Norton user, we’ve got a dedicated guide for you to completely uninstall the antivirus. Also, there’s a similar one for McAfee users.

After removing the antivirus, try to install Visual C++ Redistributables. Many users reported problems with AVG, but this issue can also appear with other antivirus tools, so be sure to remove or disable it.

You don’t have to worry about malware after removing your antivirus. Windows Defender is as capable, and in some cases better, at protecting your PC against threats. Read this article to find out more.


Your antivirus and Firewall can block certain apps. Check out this guide to find out more.


8. Perform in-place upgrade

  1. Download Windows 10 ISO from Microsoft’s website.
    • Be sure to download the latest version that matches your system architecture.
  2. Double click the ISO file to mount it.
    • The new drive will now appear in This PC, open it and run setup.exe.
  3. Windows will now prepare the necessary files.
    • You’ll be asked to download important updates before proceeding with the upgrade.
    • Downloading updates isn’t mandatory, but it might make the upgrade process easier.
  4. Select the desired option and click Next.
  5. Windows will now download the necessary updates. This can take a while, so be patient.
  6. You should now see the Terms of Service screen.
  7. Windows will now install the downloaded updates.
  8. Once you see Ready to install screen, click on Change what to keep.
  9. Select Keep personal files and apps and click on Next.
  10. Upgrade process will now start.
    • This process can take a while, so don’t interrupt it.

Missing DLL files can cause many problems on your PC, and users reported the following issues:

  • Sysmenu dll file missing
    • Many users reported that Sysmenu dll file was missing on their PC.
    • This can be a big problem, but you should be able to fix the issue using SFC or DISM scan.
  • Msvcr100.dll file missing error
    • This file is usually associated with Visual C++ Redistributables, and after installing the necessary components, the issue should be resolved.
  • T8extpex.dll file is missing
    • T8extpex.dll is another file that can become missing, however you should be able to recover it using one of our solutions.
  • Hal.dll files missing
    • Another problematic file is Hal.dll. If this file is missing, you won’t be able to run your favorite applications.
  • DLL file missing for iTunes, SQL Developer
    • Many users reported that DLL files for their favorite applications are missing.
    • This is a relatively common problem and you can fix it by reinstalling the problematic application.
  • Kernel32.dll files missing
    • Several users reported that Kernel32.dll is missing on their PC.
    • This is a system file but you should be able to restore it by repairing your Windows installation.

If DLL files are missing from your PC, you might be able to fix the problem by performing an in-place upgrade. By doing so, you’ll reinstall Windows 10, but you will keep all your files and applications.

Once your PC is upgraded, you’ll have a new installation of Windows 10, but all your files and applications will remain intact. If an in-place upgrade can’t fix the problem, you might have to perform a Windows 10 reset.

We already covered how to perform Windows 10 factory reset in one of our previous articles, so be sure to check it for detailed information.


That’s it for missing DLL files in Windows 10, I hope this article helped you to solve the problem. If you have any questions or suggestions, just write them down in the comments section below.

Editor’s Note: This article was originally published in October 2017 and was revamped and updated in February 2021 for freshness, accuracy, and comprehensiveness.

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