DISM Error 87 ("The parameter is incorrect") commonly occurs when running the Deployment Image Servicing and Management (DISM) tool on Windows. This report explains causes, diagnostics, and a comprehensive set of solutions, including step-by-step commands, troubleshooting flowcharts, and preventive measures. Target audience: system administrators and advanced users troubleshooting Windows image servicing failures on Windows 7 through Windows 11.
"Targeting," he whispered. "I need to target the install.wim file directly." dism error 87 fixed
DISM /Online /Cleanup-Image /RestoreHealth DISM Error 87 ("The parameter is incorrect") commonly
Use dism /online /cleanup-image /scanhealth (Note: Windows 7 does not support the automatic repair feature of RestoreHealth). Summary Table Likely Cause Missing Spaces Add a space before every / No Admin Rights Right-click CMD > Run as Administrator Pending Updates Run Windows Update Troubleshooter Wrong OS Version Ensure you aren't using Win 10 commands on Win 7 "Targeting," he whispered
dism /online /cleanup-image /revertpendingactions
DISM error 87 is a common issue that occurs when users attempt to use the DISM tool to service or manage Windows images. The error message typically reads: "The DISM service failed. The base directory cannot be specified on the command line for online operations." This error can occur due to various reasons, including:
Use a Windows ISO as source (preferred):