Windows & BSOD · high

How to fixWU-0x800f081f

Windows Update Error 0x800f081f

What this error means

WU-0x800f081f is a high-severity Windows operating system problem. The source files required for the Windows Update package could not be found, causing installation failure (often occurs during DISM deployment tasks or .NET Framework 3.5 updates). Work through the steps below in order.

Before you begin

Save open work and back up important files. Note any recent driver or hardware changes. If Windows cannot start, use the startup guide first.

Work through these checks

0 of 3 complete
01Run the DISM RestoreHealth command to download clean system file copies from Windows Update.

Run the DISM RestoreHealth command to download clean system file copies from Windows Update..

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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02Run the System File Checker (sfc /scannow) utility to scan and repair corrupted files.

Run the System File Checker (sfc /scannow) utility to scan and repair corrupted files..

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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03Reset Windows Update components by purging the SoftwareDistribution folder cache.

Reset Windows Update components by purging the SoftwareDistribution folder cache..

Use the instructions for your exact device and operating system. Check the manufacturer’s documentation before changing firmware, hardware, or system settings.

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Possible causes

  • Missing or corrupted component files inside the local Windows Component Store (WinSxS folder).
  • Corrupt registry keys or update transaction logs blocking Windows Update components.
  • Missing access to clean Windows installation media when installing offline features.