Slow down. Ensure there is a space between every forward slash ( / ) and the preceding text.
In this scenario, the best path forward is to bypass DISM entirely and use the System File Checker (SFC). Running sfc /scannow can repair the underlying system files that DISM relies on to function. Once SFC finishes its pass, rebooting and retrying the DISM command often resolves the ghost parameter error.
Or perhaps the more cryptic: “Error 87: The parameter is incorrect.” dism error 87
Error: 87 – The /limitaccess option is unknown in this context. (Fix: /limitaccess works with /source only when using Windows Update as fallback; not directly with /source pointing to a WIM.)
If syntax is 100% correct but error 87 persists: Slow down
DISM.exe @dismParams
включен в комплект средств оценки и развертывания Windows 10 (ADK). DISM windows 10 с драйвером фильтра Wofadk. Microsoft Learn Ошибки при запуске dism /Online /Cleanup-Image /RestoreHealth Проверьте состояние службы Установщик модулей Windows (TrustedInstaller), возможно она отключена, отсюда и эта ошибка. Microsoft Learn DISM command fails with error code 87 - Windows Client Feb 12, 2026 — Running sfc /scannow can repair the underlying system
Error: 87 – The option is unknown.