Fix: “Some Update Files Aren’t Signed” Error on Windows

Windows updates are useful for regular users; it can protect your computer from malware and other annoying security issues. Frequent updates can fix loopholes, and protect your device from bugs, vulnerabilities and keep secure and updated. However, sometimes users can face the issue “some update files aren’t signed’’ error on system when they try to update the Windows.

To fix the “some update files aren’t signed” error on Windows, you can rely on this article. Here, we have shared a few solutions that help you to erase your error quickly. So, be patient and read this full article till the end to pile up knowledge about the solutions in detail.

Fix 1: Run Windows Update Troubleshooter

The primary aim of troubleshooting is to identify why something doesn’t work and provide reliable direction to resolve the solution. Here, for this error running the Windows Update troubleshooter is the most eminent and readily step to resolve the issues “some update files aren’t signed’’ on Windows.

  • First, in the Windows search box type ‘’Troubleshoot’’ and press the Enter key.
  • The further step is, select the portion Additional troubleshooters.
  • The next step, you have to find Windows Update from the list.Windows Update
  • Now, you can click it and select Run the troubleshooter.
  • Once the update process is done, you can restart your Windows.

Fix 2: Disable third-party security software

Some third-party security software can cause malfunction on Windows or might interfere in the update process. They may contain malware, spyware, and malicious code that can be used to obtain unauthorized access, and to steal valuable information. If you are facing the error issues, you can temporarily disable the third-party security software. The steps are as follows:

  • Firstly, in the system tray icon you can select and right-click on the antivirus or security software.  
  • The next step is, select Disable or Turn off for a short time.
  • Then, you can confirm any prompts that may top up on your screen.
  • Next, you can move with downloading and installing the Windows updates.
  • Finally, once the updates are successfully finished, then you can restart the antivirus or security software.

Fix 3: Run SFC and DISM

SFC and DISM both are useful for resolving problems with the operating systems, such as crashing, freezing, and or any errors. Generally, the DISM tool is used to repair Windows images and the SFC command will be helpful for scanning all protected system files. You can, Run the SFC and DISM as follows

  • At first, inside the Windows search type ‘cmd’.
  • The next step is, open the Command prompt screen, then right-click on it and pick Run as administrator.
  • Then, from the User Account Control window, further you can click Yes when prompted.
  • Now, you can copy +paste the following command and pressing the Enter key after:Sfc scan now
  • Until the scan is completed, you can wait, if any issues occur it will fix them. Then, utilize the set of the following commands, pressing the Enter key every time:
DISM /Online /Cleanup-Image /CheckHealth
DISM /Online /Cleanup-Image /ScanHealth
DISM /Online /Cleanup-Image /RestoreHealth
  • If you find an error while performing this last command, then type the following command and press Enter,

/Source:c:/RepairSource /Windows /LimitAccess 

  • Finally, shut down the Command prompt and restart the system.

Fix 4: Reset Windows Update Components

Resetting the Windows Update is a useful process, it can remove the out of date folders and create the latest ones readily. This resetting process can terminate unnecessary facilities and renaming the software distribution folders and move the resetting process.

  • At first, once you open Command Prompt screen by typing ‘cmd’ in the search box, next open it as Administrator.
  • Once done, you can copy & paste in the following commands, then press the Enter key after each time:
net stop bits
 net stop wuauserv
 net stop appidsvc
 net stop cryptsvc

Del “%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\*.*”rmdir %systemroot%\SoftwareDistribution /S /Q
 rmdir %systemroot%\system32\catroot2 /S /Q
 regsvr32.exe /s atl.dll
 regsvr32.exe /s urlmon.dll
 regsvr32.exe /s mshtml.dll
 netsh winsock reset
 netsh winsock reset proxy
 net start bits
 net start wuauserv
 net start appidsvc
 net start cryptsvc
  • Finally, you can restart your device.

Fix 5: Install the Update Manually

Manually installing the updates will keep your device up-to-date on security repair, it can help to protect your system from unnecessary malware and other security warnings. The steps are as follows:

  • Firstly, in the Windows search box type Updates and press the Enter key.
  • Then, select the View update history option.
  • Next, you can locate the update which failed with an error and copy that KB number.  
  • Thereafter, you can open your browser and move forward to the Microsoft Update CatalogMicrosoft Update Catalog
  • In the search bar, you can type in the KB number and then click Search.
  • Next, locate the accurate versions of the update for your device (to verify this, right-click on Start option and select System) and click on Download.
  • Lastly, you can use on- screen directions to complete the installation process and restart your Computer.

Fix 6: Delete Windows Update Registry Key

Deleting the Windows Update registry key is a most useful solution to the error “some update files aren’t signed’’.  To deleting the registry key the steps are as follows:

  •  First, in the Windows search box type regedit and press the Enter key.
  • Now, you can wait until UAC top up on screen and then click Yes.
  • Next, after the Registry Editor opens and directed to the following location:


  • Then, right-click on the Windows Update registry key and select the Delete option.  Once done, you can shut down the Registry Editor.
  • The next step is, in Windows search type Services and hit the Enter key.
  • Finally, go to the Windows Update service, then right click and select the Restart option.

Fix 7: Use Media Creation Tool

The Media creation tool can allow you to create installation media or directly upgrade your system, which can easily get rid of update-related issues. Here we share the steps to use Media creation Tool:

  • Firstly, go to the Microsoft website and install the Windows 10/11 installation media, then double-click on the installer, then select the Yes option when UAC top up on Window screen and you can agree to the terms.
  • Then, you can pick the Upgrade this PC now option and click the Next.
  • Now, Windows will begin downloading the useful files.
  • Then, you have to agree to the terms again and click on Next.
  • Once you feel satisfied with your choices, you can install.
  • Lastly, to start the upgrade process click on the Install process.

Lastly, the error “some update files aren’t signed” issues on Windows is a common problem faced by users. We have shared some useful steps to fix this error properly and can update Windows smoothly. By following the above given solutions, you will be able to perform the update process readily and solve the issues “some update files aren’t signed’’ error on Windows.