Fix 0x800f0831 Installation Failure when you Install an Update

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The error 0x800f0831 is usually detected by the affected users in WindowsUpdate.log with the Event Viewer after the classic cumulative update installation has failed. Although the problem is most often associated with Windows Server Update services, it is also confirmed with the end-user Windows versions.

It turns out that the most common cause of this error message is a manifest missing from the previous update package. In other words, the WU (Windows Update) component does not know what was last installed and therefore refuses to install new update packages. If this scenario applies, you can solve the problem by manually installing the missing update.

Another possible cause of error 0x800f0831 is a scenario in which your end-user computer cannot communicate with the Windows Update servers. This can be facilitated either by corrupting system files or by using VPN connections or proxy servers.

However, the problem can also be caused by a disabled WU service or a missing .NET 3.5 framework. In this case, you must activate the framework via the Windows “Features” menu or you can install it from a compatible installation media.

In rare cases, Windows updates may fail with error 0x800f0831 due to system corruption. This can be corrected either by restoring the system, performing SFC and DISM scans, or by updating your operating system components (using the Cleanup or Repair Facility).

Download the Windows Update Files Again

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Error code 0x800f0831 in Windows Update may be due to an interruption during download, which may damage some files. The interruption may be caused by third-party software or sudden shutdown of your computer. You may want to download the files again and start your PC cleanly.

Disable Proxy

  • If you wish to deactivate the proxy, follow the instructions and resolve your problems in no time. You know how to do this:
  • Press the Windows + R keys on your keyboard to open the “Run” search box on the screen.
  • In the “Run” search box, type the following command: “inetcpl.cpl.
  • Once you have made your entry, press the “Enter” button to continue the process.
  • You can also select the “Connections” option.
  • Then click on “LAN Settings” to launch it on the screen.
  • Look for the option “Detect settings automatically”.
  • Once found, check the box next to “Auto Detect Settings” to activate it.
  • Finally, find the “Proxy Server” option and uncheck the box to disable the proxy settings.

Search for and Repair Corrupted System Files

Step 1: Open the command prompt with the right “Admin” button, right-click “Start” and select “Command Prompt (Admin)”.

Step 2: At the command prompt, type: dism /online /cleanup-image /restorehealth and press Enter.

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