Windows & BSOD · high

How to fix0x800f081f

Windows Update Error 0x800f081f (Source Files Missing)

What this error means

Windows Update Error 0x800f081f (Source Files Missing) ranks as a high-severity Windows operating system issue in our database. This error code is triggered when the Deployment Image Servicing and Management (DISM) tool or Windows Update fails to install packages because the required source files to repair the local component store (WinSxS) are corrupted or missing. It's also often linked to lack of internet connection. Follow the steps below to fix it.

Before you begin

Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.

Work through these checks

0 of 3 complete
01Run DISM with a mounted Windows ISO source path
  1. Run DISM with a mounted Windows ISO source path
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

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02Run SFC scan
  1. Run SFC scan
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors
03Check internet connection and Windows Update service status
  1. Check internet connection and Windows Update service status
What to expect

Check whether the original symptom still occurs.

If it does not help

Continue only if this check applies to your device. Consult its manufacturer if you are unsure.

Browse related errors

Possible causes

  • Corrupt local component store
  • Incorrect DISM source argument path
  • Lack of internet connection