DISM Error 87 Fixed: Complete Guide to Solving "The Parameter is Incorrect"

Running the command in a standard Command Prompt window instead of an elevated administrator window.

Let me outline: intro defining error 87, causes, method 1 (check syntax), method 2 (admin rights), method 3 (use DISM /Online), method 4 (PowerShell alternative), method 5 (check image health), method 6 (repair Windows Update), method 7 (run SFC first), conclusion with best practices and FAQs.

Ensure there is a before every slash in the command. 2. Run as Administrator

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.

Dism Error 87 Fixed Jun 2026

DISM Error 87 Fixed: Complete Guide to Solving "The Parameter is Incorrect"

Running the command in a standard Command Prompt window instead of an elevated administrator window.

Let me outline: intro defining error 87, causes, method 1 (check syntax), method 2 (admin rights), method 3 (use DISM /Online), method 4 (PowerShell alternative), method 5 (check image health), method 6 (repair Windows Update), method 7 (run SFC first), conclusion with best practices and FAQs.

Ensure there is a before every slash in the command. 2. Run as Administrator

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.