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DISM RestoreHealth Source Error — Windows Image Repair Cannot Find Source Files

Errorsystem

Overview

Fix DISM /RestoreHealth error when the Windows component store repair cannot find source files, failing to download from Windows Update or use a local source.

Key Details

  • DISM (Deployment Image Servicing and Management) repairs the Windows component store used by SFC
  • The RestoreHealth option downloads clean files from Windows Update to replace corrupted components
  • When DISM cannot find source files, it fails with error 0x800f081f or source files not found message
  • A local Windows ISO or WIM file can be specified as an alternative repair source
  • DISM must complete successfully before SFC /scannow can effectively repair system files

Common Causes

  • Windows Update servers unreachable due to network issues or proxy configuration
  • WSUS (enterprise) configured as the source but does not have the required repair packages
  • Local Windows ISO version does not match the installed Windows version and build
  • Corrupted Windows Update cache preventing download of repair files

Steps

  1. 1Try online repair first: DISM /Online /Cleanup-Image /RestoreHealth (requires internet)
  2. 2If online fails, use Windows ISO: mount ISO then DISM /Online /Cleanup-Image /RestoreHealth /Source:D:\sources\install.wim
  3. 3Ensure the ISO matches your exact Windows version and build number
  4. 4Clear DISM cache before retrying: DISM /Online /Cleanup-Image /StartComponentCleanup
  5. 5For WSUS environments: temporarily set Group Policy to use Windows Update directly for repairs

Tags

dismrestorehealthsourcecomponent-storerepair

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Frequently Asked Questions

DISM repairs the Windows component store (the source repository). SFC repairs individual system files using the component store. If the component store is corrupted, SFC cannot repair files. Always run DISM first, then SFC.