Fix DISM Error 0x800f081f: “The Source Files Could Not Be Found” (Using Windows ISO & install.wim)
Windows DISM Error 0x800f081f with the message “The source files could not be found. Use the ‘Source’ option to specify the location of the files that are required to restore the feature” occurs when DISM /Online /Cleanup-Image /RestoreHealth fails to download replacement binary payloads from Windows Update to repair corrupted files in the Windows Component Store (WinSxS). This typically happens due to network proxy restrictions, broken Windows Update services, or build version mismatches between the running OS and Microsoft’s update servers. You can permanently resolve Error 0x800f081f by mounting an official Windows ISO matching your build, locating install.wim, and pointing DISM directly to the clean local image source with /LimitAccess.
/LimitAccess parameter prevents DISM from attempting to query Windows Update, forcing it to consume exclusively from your clean local WIM/ESD source.Table of Contents
1. Step 1: Mount Official Windows ISO
Download the official Windows 11 or Windows 10 ISO from Microsoft. Right-click the ISO file and select Mount. Note the assigned drive letter (for example, drive E:).
2. Step 2: Identify Image Index Number in install.wim
An ISO often houses multiple editions (Home, Pro, Enterprise). Find the index matching your OS:
dism /get-wiminfo /wimfile:E:\sources\install.wim
Identify your edition’s Index number (e.g., Index 6: Windows 11 Pro).
3. Step 3: Execute DISM RestoreHealth with Local Source
Execute the repair using your mounted WIM image and specified index:
dism /online /cleanup-image /restorehealth /source:WIM:E:\sources\install.wim:6 /limitaccess
The repair progress will advance to 100% and report: “The restore operation completed successfully.”
4. Step 4: Handling install.esd Instead of install.wim
If your installation media was downloaded via Media Creation Tool, the file is compressed as install.esd. Modify the command syntax accordingly:
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Should I run SFC after DISM completes?
Yes! DISM repairs the master component store (WinSxS). Once DISM finishes with 100% success, immediately run sfc /scannow to replace corrupted active system files from the newly repaired store.
