Dism Error 87 Fixed Now

Dism Error 87 Fixed Now

The DISM Error 87 usually means "The parameter is incorrect". It typically occurs because Windows doesn't recognize the command you typed, often due to formatting mistakes, lack of permissions, or version incompatibility. Common Fixes for DISM Error 87

  • dir D:\sources\install.wim
  1. Check Health: DISM /Online /Cleanup-Image /CheckHealth
  2. Scan Health: DISM /Online /Cleanup-Image /ScanHealth
  3. Restore Health: DISM /Online /Cleanup-Image /RestoreHealth

2. Common Causes

  • Typographical or syntax errors in the DISM command (incorrect switches, missing colons, wrong spacing).
  • Using commands intended for an offline image on an online session or vice versa (e.g., /Image: vs /Online).
  • Mixing incompatible switches (e.g., /Cleanup-Image subcommands with image-targeting switches).
  • Running 32-bit DISM on a 64-bit OS, or using DISM versions mismatched to the OS build.
  • Corrupt or missing system files causing DISM to fail to parse options.
  • PATH or environment problems causing the wrong DISM.exe to be invoked.
  • Running in a non-elevated Command Prompt when elevation is required.
  • Windows Update or servicing stack problems preventing component access.
  • Faulty Windows ADK/WinPE installations or third-party tools overriding system binaries.
DISM /Online /Cleanup-Image /RestoreHealth /Source:WIM:"F:\sources\install.wim":1 /LimitAccess

DISM /Online /Cleanup-Image /CheckHealth
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