Getting the ‘ESENT 642 wuaung.dll’ error: Here’s how to fix it on Windows 10

Andrew Wafer
by Andrew Wafer
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The ‘ESENT 642 wuaung.dll’ is not a common Windows 10 error, but it affects quite a few users daily. And since you might have hard times in finding the right solutions, we are here to assist you. So, if you cannot manage to fix the ESENT 642 wuaung.dll issue and the 1073741825 (0X40000001) error code that comes along, we will try to describe the perfect troubleshooting solutions for your Windows 10 system.

How to solve the ESENT 642 wuaung.dll Windows 10 error

  • Run a DLL Fixer
  • Run a system scan
  • Restore Windows Update Datastore

This particular 1073741825 (0X40000001) error code might be displayed when you try to run certain programs from your Windows 10 device. For example, some users detected this problem when using the Macrium backup utility. However, what you need to know is what’s behind this issue. Thus, right from the start it should be clear for you that the ESENT 642 wuaung.dll problem is not related with a certain app but with the Windows system. In fact, it’s a Windows update error that appeared because there is a corrupted Windows Update Datastore.

For more information on how to fix corrupted system files on Windows 10, this article may help you.

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.

Run a system scan

First, try to check if there are major problems within the Windows 10 system. If there are, Windows will hopefully fix everything automatically:

  1. On your Windows 10 device open an elevated command prompt window.fix ESENT 642 wuaung.dll
  2. For showing elevated cmd: right click on the Windows Start button; from the list that is displayed click on ‘Command Prompt (Admin).
  3. In the cmd window enter sfc / scannow.
  4. Wait while the scanning process is running – it might take a while depending on the amount of files that are stored on your device.
  5. If there are issues, Windows will try to fix everything.
  6. In the end, restart your computer and verify if the ESENT 642 wuaung.dll problem was fixed or not.

Restore Windows Update Datastore

Since the ESENT 642 wuaung.dll error is caused by a Windows update error, you should restore Windows Update Datastore by applying:

  1. Once more, open an elevated cmd window as already explained above.
  2. In the cmd window enter DISM.exe /Online /Cleanup-image /Scanhealth.
  3. If this command will return errors, in the same cmd window type and execute DISM.exe /Online /Cleanup-image /Restorehealth.
  4. Restart your Windows 10 system in the end.
  5. That should be all.

If you are still experiencing the 1073741825 (0X40000001) ESENT 642 wuaung.dll Windows 10 error, don’t hesitate and get in touch with us. Also, make sure you provide any additional info that might help us better understand your particular situation. In that way we can come with the right solution for your problem. You can contact our team by using our contact form or, easier, by using the comments field that’s available down below.