api-ms-win-core libraryloader l1-1-1.dll is missing from your computer [Solved]

By Enya Zhang  Common Errors  Windows   0 Comment

If you find your computer stuck with this api-ms-win-core libraryloader l1-1-1.dll is missing error when trying to upgrade it to Windows 10, you’re not alone. Many users have reported the same.

But don’t worry, we’re here to help you get rid of the error!

WARNING: This .dll file error could very well be one of the many problems our computer is having. You might want to AVOID those .dll file download programs since the majority of them are only bandage fixes that are probably infected/unapproved/outdated and can pose greater threats to your PC in the long run.

What you might want to know

Api-ms-win-core-libraryloader-l1-1-1.dll is a type of dll file that enables different applications on Windows to share the same functionality. And since it’s not a file that comes with Windows 7, it can be prone to api-ms-win-core-libraryloader-l1-1-0.dll is missing from your computerapi-ms-win-core-libraryloader-l1-1-0.dll Not Found problems when trying to upgrade from Windows 7 to Windows 10.

In case you don’t know what Windows bit version (64-bit or 32-bit) your PC is running, press the Windows logo key and the Pause key at the same time to find out.

Try these fixes

Just work your way down the list until the .dll file missing error alert goes away:

  1. Download & install Microsoft Visual C++
  2. Move the api-ms-win-core-libraryloader-l1-1-0.dll file

  3. Replace the wimgapi.dll file
  4. Install ALL Windows updates
  5. Bonus tip: Update your device drivers

Fix 1: Download & install Microsoft Visual C ++

Every so often this api-ms-win-core libraryloader l1-1-1.dll is missing error occurs simply because you don’t have the file, which is part of Microsoft Visual C ++. So in Fix 1, we’re gonna download it from the Microsoft official website.

If you’ve already had Microsoft Visual C ++ installed on your PC, you might want to jump to Step 2.
To do so:
  1. Go to Microsoft downloads for Microsoft Visual C ++.
  2. Make sure you click the first link for the latest version.

  3. Click Download

  4. Select your Windows bit version and click Next

  5. Once the download finishes, double-click on the file and follow the on-screen instructions to install.
  6. Keep track of the upgrade and hopefully it proceeds smoothly this time.

Fix 2: Move the api-ms-win-core-libraryloader-l1-1-0.dll file

  1. Depending on what bit version your computer is running:
    • If it’s a 64-bit: copy & paste the api-ms-win-core-libraryloader-l1-1-0.dll file into C:\Windows\SysWOW64;
    • If it’s a 32-bit: copy & paste api-ms-win-core-libraryloader-l1-1-0.dll file into C:\Windows\System32
  2. Restart your computer and see if the .dll file missing error has disappeared.

Fix 3: Replace the wimgapi.dll file

If the two fixes above fail to resolve the api-ms-win-core-libraryloader-l1-1-0.dll file missing problem, then you should probably try replacing the dll file responsible for the error (the wimgapi.dll ) from another local copy. Here’s how to do it…

  1. On your keyboard, press the Windows logo key  and E at the same time. Then copy & paste C:\Windows\System32\ into the address bar and press Enter

  2. Copy & paste wimgapi.dll into the search box. Then copy the wimgapi.dll file.

  3. Go to C:\Windows10upgrade and paste the file into the background area.
  4. Click Yes when asked to confirm replacing the wimgapi.dll file with a new one.
  5. Re-launch the upgrade assistant and see if it runs without fail this time.

Fix 4: Install ALL Windows updates

Windows Update keeps releasing patches and packages designated to fix bugs/errors, update/replace files and enhance the overall performance of the Windows components. And api-ms-win-core-libraryloader-l1-1-0.dll missing file can be one of them. To manually run Windows Update:

  1. On your keyboard, press the Windows logo key and type update. Then click on Check for updates

  2. Click Check for updates

  3. All updates available will be downloaded & installed automatically. After that, try the upgrade again and see if it succeeds this time.

Bonus tip: Update your device drivers

It’s always recommended to have the latest device drivers on your system to make sure all the hardware pieces run at their peak to improve overall system stability and computer performance (especially if you’re a gamer). In fact, it can also help prevent system crashes like blue screen of death and other common problem driver induced issues.

There are two ways you can get the right drivers for your device drivers: manually or automatically.

Manual driver update – You can update your device drivers manually by going to the manufacturer’s website for your hardwares, and searching for the most recent correct driver. Be sure to choose only drivers that are compatible with your Windows version.


Automatic driver update – If you don’t have the time, patience or computer skills to update your video and monitor drivers manually, you can, instead, do it automatically with Driver Easy. Driver Easy will automatically recognize your system and find the correct drivers for your exact hardware, and your Windows version, and it will download and install them correctly:

  1. Download and install Driver Easy.
  2. Run Driver Easy and click the Scan Now button. Driver Easy will then scan your computer and detect any problem drivers.

  3.  Click Update All to automatically download and install the correct version of ALL the drivers that are missing or out of date on your system (this requires the Pro version – you’ll be prompted to upgrade when you click Update All).

  4. Restart your computer for the changes to take effect.

How have the fixes above helped you with your troubleshooting? Do you have any ideas or tips to share with us? Feel free to drop us a comment below to let us know your thoughts. 🙂

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