He typed: dism /Image:D:\ /Cleanup-Image /RestoreHealth /Source:wim:F:\sources\install.wim:1 /LimitAccess
An outdated operating system can trigger compatibility issues with DISM. Open ( Win + I ). Navigate to Windows Update. Click Check for updates and install any pending packages. Restart your computer. 📊 Summary of Common Errors What Happens How to Fix It Missing Spaces DISM/Online... throws Error 87. Add a single space before every / symbol. Windows 7 Usage /RestoreHealth is unsupported on Win 7.
"Gotcha," Mark grinned. He exited diskpart and prepared the corrected command. This time, he wouldn't use /Online . He would point the tool directly to the source installation file (install.wim) located on his trusty USB recovery drive (which he knew was mounted as F:) and tell it to fix the broken Windows drive (D:). dism error 87 fixed
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Win 7 uses alternative parameters or the System Update Readiness Tool . Command line parameters fail to trigger. Relaunch using Run as administrator. Click Check for updates and install any pending packages
No. It just means DISM didn’t understand your command. Your system files are safe.
A stalled Windows Update service can interfere with DISM's ability to fetch clean files from the cloud. Resetting the service can clear Error 87. Open . throws Error 87
If you are running an older operating system (especially Windows 7 or 8.1), the default DISM tool does not support the /LimitAccess or /Source parameters in the same way Windows 10 does.
/Source:C:\My Install Files\sources\install.wim
DISM /Online /Cleanup-Image /RestoreHealth /Source:wim:D:\sources\install.wim:1 /limitaccess
