How To Fix ESENT 642 wuaung.dll Error on Windows 10/11

Don't stress over this DLL error and find the answer with our support

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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Alex Serban
Alex Serban
Windows Server & Networking Expert
After moving away from the corporate work-style, Alex has found rewards in a lifestyle of constant analysis, team coordination and pestering his colleagues. Holding an MCSA Windows Server... read more
Affiliate Disclosure
  • The ESENT 642 wuaung.dll error can stop you from running certain programs on your device.
  • But weirdly enough, the ESENT error 642 cannot be linked to a particular app. It's actually a Windows Update error.
  • Try to check if there are major problems within the Windows 10 system by performing a quick scan.
  • Damaged or missing DLLs or registry keys can also trigger the ESENT warning 642, so make sure you apply our advice. 

For fixing DLL errors, we recommend Fortect:
This tool will replace the damaged or corrupted DLLs with their functional equivalents using its dedicated repository where it has the official versions of the DLL files.

  1. Download and Install Fortect on your PC
  2. Launch the tool and Start scanning to find DLL files that could be causing PC problems
  3. Right-click on Start Repair to replace broken DLLs with working versions
  • Fortect has been downloaded by 0 readers this month.

ESENT 642 wuaung.dll is not a common Windows 10 error, but it affects quite a few users daily. Since you might have a hard time finding the right solutions, we are here to assist you.

The Windows 10 ESENT error 642 might be displayed when you try to run certain programs from your 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 to you that the ESENT warning 642 is not related to a certain app but to the Windows system.

In fact, it’s a Windows Update error that most likely appears because there is a corrupted Windows Update Datastore.

How do I fix Esent 642?

1. Run a system scan

  1. On your Windows 10 device open the elevated Command prompt (Admin) windows.
  2. In the cmd window, enter sfc / scannowXbox One controller runtime error
  3. Wait while the scanning process is running – it might take a while depending on the number of files that are stored on your device.
  4. If there are issues, Windows will try to fix everything.
  5. In the end, restart your computer and verify if the ESENT 642 wuaung.dll problem was fixed or not.

2. Restore Windows Update Datastore

  1. Once more, open an elevated cmd window as 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.

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

3. Run a third-party DLL fixer

One of the potential culprits for the ESENT 642 wuaung.dll error can be traced back to missing, overwritten, or corrupted DLL files.

That’s why we suggest you start the troubleshooting and repair process by making sure that your DLL files are not compromised in any way.

Hence, you can approach specialized tools for the job and Fortect is the best choice as the all-in-one repair tool for PC.

Get Fortect

That should be all. If you are still experiencing the ESENT error 642, don’t hesitate and get in touch with us by using the comments field below.

Still experiencing issues?


If the above suggestions have not solved your problem, your computer may experience more severe Windows troubles. We suggest choosing an all-in-one solution like Fortect to fix problems efficiently. After installation, just click the View&Fix button and then press Start Repair.

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